Division I. POLYPETALOUS EXOGENOUS PLANTS.

Floral envelopes consisting of both calyx and corolla; the petals not united with each other. (Several genera or species belonging to Polypetalous Orders are destitute of petals, or have them more or less united.)

Order 1. RANUNCULÀCEÆ. (Crowfoot Family.)

Herbs or some woody plants, with a colorless and usually acrid juice, polypetalous, or apetalous with the calyx often colored like a corolla, hypogynous; the sepals, petals, numerous stamens, and many or few (rarely single) pistils all distinct and unconnected.—Flowers regular or irregular. Sepals 3–15. Petals 3–15, or wanting. Stamens indefinite, rarely few. Fruits either dry pods, or seed-like (achenes), or berries. Seeds anatropous (when solitary and suspended the rhaphe dorsal), with hard albumen and a minute embryo.—Leaves often dissected, their stalks dilated at the base, sometimes with stipule-like appendages. (A large family, including some acrid-narcotic poisons.)

Synopsis of the Genera.

Tribe I. CLEMATIDEÆ. Sepals normally 4, petal-like, valvate in the bud, or with the edges bent inward. Petals none, or small. Achenes numerous, tailed with the feathery or hairy styles. Seed suspended.—Leaves all opposite.

1. Clematis. Climbing by the leafstalks, or erect herbs.

Tribe II. ANEMONEÆ. Sepals 3–20, often petal-like, imbricated in the bud. Stamens mostly numerous. Achenes numerous or several, in a head or spike.—Herbs, never climbing; leaves alternate, or radical, the upper sometimes opposite or whorled.

[*] Petals none (rarely some staminodia). Seed suspended.

[+] All but the lower leaves opposite or whorled. Peduncles 1-flowered.

2. Anemone. Involucre leaf-like, remote from the flower. Leaves compound or dissected. Pistils very many.

3. Hepatica. Involucre close to the flower, of 3 oval bracts, calyx-like. Leaves radical, simple and lobed. Pistils several.

4. Anemonella. Stigma terminal, broad and flat. Radical leaves and involucre compound. Peduncles umbellate. Achenes 4–15, many-ribbed.

[+][+] Leaves alternate, compound. Flowers panicled, often diœcious.

5. Thalictrum. Sepals usually 4, petal-like or greenish, Achenes few.

[*][*] Petals none. Sepals 3–5, caducous. Seed erect. Leaves alternate.

6. Trautvetteria. Achenes numerous, inflated, 4-angled. Flowers corymbose. Filaments white, clavate.

[*][*][*] Petals evident. Sepals usually 5. Achenes many.

7. Adonis. Sepals and petals (5–16, crimson or scarlet) flat, unappendaged. Seed suspended.

8. Myosurus. Sepals spurred. Petals 5, white. Achenes in a long spike. Scapes 1-flowered. Seed suspended.

9. Ranunculus. Petals 5, yellow or white, with a scale or gland at base. Achenes capitate. Seed erect.

Tribe III. HELLEBOREÆ. Sepals imbricated in the bud, rarely persistent, petal-like. Petals often nectariferous or reduced to staminodia or none. Pods (follicles) or berries (in n. 20, 21) few, rarely single, few–many-seeded.—Leaves alternate.

[*] Ovules and commonly seeds more than one pair. Herbs.

[+] Flowers regular, not racemose. Petals inconspicuous nectaries or slender or none. Sepals tardily deciduous.

10. Isopyrum. Petals none. Sepals broad, white. Pods few. Leaves compound.

11. Caltha. Petals none. Sepals broad, yellow. Leaves kidney-shaped, undivided.

12. Trollius. Petals 5–20, narrow, pitted above the base. Pods sessile. Leaves palmately lobed.

13. Coptis. Petals 5–6, small, hollowed at apex, white. Pods long-stalked. Leaves radical, trifoliolate.

14. Helleborus. Petals small, tubular, 2-lipped. Sepals 5, broad, persistent and turning green. Pods sessile.

15. Eranthis. Petals small 2-lipped nectaries. Sepals 5–8, narrow, deciduous. Flower solitary, involucrate.

[+][+] Sepals and large spur-shaped petals regular, each 5.

16. Aquilegia. Pistils 5, with slender styles. Leaves ternately compound.

[+][+][+] Flowers unsymmetrical and irregular. Sepals 5.

17. Delphinium. Upper sepal spurred. Petals 4, of two forms; the upper pair with long spurs, enclosed in the spur of the calyx.

18. Aconitum. Upper sepal hooded, covering the two long-clawed small petals.

[+][+][+][+] Flowers regular, racemose. Sepals caducous. Petals very small, stamen-like, or none. Leaves decompound.

19. Cimicifuga. Flowers in long often paniculate racemes. Pistils 1–8, becoming many-seeded pods.

20. Actæa. Flowers in a single short raceme. Pistil single, forming a many-seeded berry.

[*][*] Ovules a single pair. Flowers regular. Roots yellow and bitter.

21. Hydrastis. Flowers solitary. Sepals 3, petal-like, caducous. Petals none. Stamens numerous. Pistils several, becoming 2-seeded berries. Leaves simple, lobed.

22. Xanthorrhiza. Flowers in compound racemes. Sepals 5. Petals 5, small, 2-lobed, with claws. Stamens 5–10. Pods 1-seeded. Shrub with pinnate leaves.

1. CLÉMATIS, L. Virgin's-Bower.

Sepals 4, or rarely more, colored, the valvate margins turned inward in the bud. Petals none or small. Achenes numerous in a head, bearing the persistent styles as naked, hairy, or plumose tails.—Perennial herbs or vines, mostly a little woody, and climbing by the bending or clasping of the leaf-stalks, rarely low and erect. Leaves opposite. (Κληματίς, a name of Dioscorides for a climbing plant with long and lithe branches.)

§ 1. FLÁMMULA. Flowers cymose-paniculate, rather small, in our species diœcious. Sepals petaloid, whitish, spreading, thin. Petals none. Anthers short, blunt.

1. C. Virginiàna, L. (Common Virgin's-Bower.) Smooth; leaves bearing 3 ovate acute leaflets, which are cut or lobed, and somewhat heart-shaped at the base; tails of the fruit plumose.—River-banks, etc., common; climbing over shrubs. July, August.

2. C. ligusticifòlia, Nutt. Very similar, but the leaves 5-foliolate or quinate-ternate.—Long Pine, Neb., and west to the Pacific.

§ 2. VIÓRNA. Flowers large, solitary on long peduncles, usually nodding. Sepals thick, erect and connivent at base, mostly dull purple. Petals none. Anthers linear.

[+] Stems climbing; leaves pinnate; calyx (and foliage) glabrous or puberulent.

3. C. Viórna, L. (Leather-Flower.) Calyx ovate and at length bell-shaped; the purplish sepals (1´ long) very thick and leathery, wholly connivent or only the tips recurved; long tails of the fruit very plumose; leaflets 3–7, ovate or oblong, sometimes slightly cordate, 2–3-lobed or entire; uppermost leaves often simple.—Rich soil, Penn. to Mo., and southward. May–Aug.

4. C. Pítcheri, Torr. & Gray. Calyx bell-shaped; the dull purplish sepals with narrow and slightly margined recurved points; tails of the fruit filiform and naked or shortly villous; leaflets 3–9, ovate or somewhat cordate, entire or 3-lobed, much reticulated; uppermost leaves often simple.—S. Ind. to Kan., and Tex. June.

5. C. críspa, L. Calyx cylindraceous below, the upper half of the bluish-purple sepals (1–2´ long) dilated and widely spreading, with broad and wavy thin margins; tails of the fruit silky or glabrate; leaflets 5–9, thin, varying from ovate or cordate to lanceolate, entire or 3–5-parted. (C. cylindrica, Sims.)—Va. near Norfolk, and southward. May–Aug.

[+][+] Low and erect, mostly simple; flowers solitary, terminal; leaves sessile or nearly so, undivided, strongly reticulated.

6. C. ochroleùca, Ait. Leaves ovate, entire or sometimes 3-lobed, silky beneath; peduncles long; tails of the fruit very plumose.—Copses, Long Island to Penn. and Ga.; rare. May.

7. C. Fremónti, Watson. Leaves crowded, thick, often coarsely toothed, sparingly villous-tomentose; peduncles very short; tails villous or glabrate, not plumose.—Mo. and Kan.

§ 3. ATRÁGENE. Some of the outer filaments enlarged and more or less petaloid; peduncles bearing single large flowers; the thin sepals widely spreading.

8. C. verticillàris, DC. Woody-stemmed climber, almost glabrous; leaves trifoliolate, with slender common and partial petioles; leaflets ovate or slightly heart-shaped, pointed, entire, or sparingly toothed or lobed; flower bluish-purple, 2–3´ across; tails of the fruit plumose.—Rocky places in mountainous districts, Maine and W. New Eng. to Va., Minn., and northwestward; rare. May.—A pair of leaves with a peduncle between them, developed in spring from each of the opposite buds, gives the appearance of a whorl, whence the specific name.

2. ANEMÒNE, Tourn. Anémone. Wind-flower.

Sepals few or many, petal-like. Petals none, or in n. 1 resembling abortive stamens. Achenes pointed or tailed, flattened, not ribbed. Seed suspended.—Perennial herbs with radical leaves; those of the stem 2 or 3 together, opposite or whorled, and forming an involucre remote from the flower; peduncles 1-flowered, solitary or umbellate. (The ancient Greek and Latin name, from ἀνεμόω, to be shaken by the wind.)

§ 1. PULSATÌLLA. Carpels numerous in a head, with long hairy styles which in fruit form feathery tails, as in Clematis; flower large, usually with some minute or indistinct gland-like abortive stamens answering to petals.

1. A. pàtens, L., var. Nuttalliàna, Gray. (Pasque-flower.) Villous with long silky hairs; peduncle solitary; flower erect, developed before the leaves, which are ternately divided, the lateral divisions 2-parted, the middle one stalked and 3-parted, the segments deeply once or twice cleft into narrowly linear and acute lobes; lobes of the sessile involucre like those of the leaves, at the base all united into a shallow cup; sepals 5–7, purplish or whitish (1–1½´ long), spreading when in full anthesis.—Prairies, Ill. and Mo., thence northward and westward. March–April.—A span high. Tail of carpels 2´ long. (Eu. Siberia.)

§ 2. ANEMÒNE proper. Styles short, not plumose. Staminodia none.

[*] Achenes densely long-woolly, compressed; involucre far below the flower.

[+] Stem single, from a small tuber; sepals 10–20; style filiform.

2. A. Caroliniàna, Walt. Stem 3–6´ high; root-leaves once or twice 3-parted or cleft; involucre 3-parted, its wedge-shaped divisions 3-cleft; sepals 10–20, oblong-linear, purple or whitish; head of fruit oblong.—Ill. to Neb. and southward. May.

[+][+] Stems several; sepals 5–8; style filiform.

3. A. parviflòra, Michx. Stem 3–12´ high from a slender rootstock, 1-flowered; root-leaves 3-parted, their broadly wedge-shaped divisions crenate-incised or lobed; involucre 2–3-leaved; sepals 5 or 6, oval, white; head of fruit globular.—Lake Superior, northward and westward. May, June.

4. A. multífida, DC. Stems from a branching caudex, silky-hairy (6–12´ high); principal involucre 2–3-leaved, bearing one naked and one or two 2-leaved peduncles; leaves of the involucre short-petioled, similar to the root-leaves, twice or thrice 3-parted and cleft, their divisions linear; sepals obtuse, red, sometimes greenish-yellow or whitish; head of fruit spherical or oval.—Rocks, etc., N. E. Maine to Lake Superior, north and westward; rare. June.

[+][+][+] Taller, commonly branching above or producing two or more peduncles; involucral leaves long-petioled; sepals 5–8, silky or downy beneath (4–6´´ long), oval or oblong; style subulate.

5. A. cylíndrica, Gray. (Long-fruited A.) Slender (2° high), silky-pubescent; flowers 2–6, on very long upright naked peduncles; involucral leaves twice or thrice as many as the peduncles, 3-divided; their divisions wedge-lanceolate, the lateral 2-parted, the middle 3-cleft; lobes cut and toothed at the apex; sepals 5, rather obtuse, greenish-white; head of fruit cylindrical (1´ long).—Dry woods, N. Eng. to Mo., and northwestward. May.—Peduncles 7–12´ long, all from the same involucre and naked throughout, or one involucellate in the middle.

6. A. Virginiàna, L. More loosely pubescent or glabrate; involucral leaves 3, 3-parted; their divisions ovate-lanceolate, pointed, cut-serrate, the lateral 2-parted, the middle 3-cleft; peduncles elongated, the earliest naked, the others with a 2-leaved involucel at the middle, repeatedly proliferous; sepals 5, acute, greenish (in one variety white and obtuse); head of fruit oval or oblong.—Woods and meadows; common. June–August.—Plant 2–3° high; the upright peduncles 6–12´ long.

[*][*] Achenes naked, orbicular, compressed, wing-margined; sepals 5, obovate; involucre sessile.

7. A. Pennsylvánica, L. Hairy, rather low; primary involucre 3-leaved, bearing a naked peduncle, and soon a pair of branches or peduncles with a 2-leaved involucre at the middle, which branch similarly in turn; their leaves broadly wedge-shaped, 3-cleft, cut and toothed; radical leaves 5–7-parted or cleft; sepals white (6–9´´ long); head of fruit spherical.—W. New Eng. to Penn., Ill., and northwestward. June–Aug.

[*][*][*] Achenes rather few, nearly naked, ovate-oblong; stems slender, 1-flowered; leaves radical.

8. A. nemoròsa, L. (Wind-flower. Wood A.) Low, smoothish; stem perfectly simple, from a filiform rootstock; involucre of 3 long-petioled trifoliolate leaves, their leaflets wedge-shaped or oblong, and toothed or cut, or the lateral ones (var. quinquefolia) 2-parted; a similar radical leaf in sterile plants solitary from the rootstock; peduncle not longer than the involucre; sepals 4–7, oval, white, sometimes blue, or tinged with purple outside; carpels only 15–20, oblong, with a hooked beak.—Margin of woods. April, May.–A delicate vernal species; the flower 1´ broad. (Eu.)

9. A. nudicaùlis, Gray. Glabrous, rootstock filiform; radical leaves reniform, 3-parted, the divisions broadly cuneate with rounded crenate-incised or -lobed summit; involucre of a single similar petiolate leaf or wanting; achenes glabrous, tipped with a slender-subulate hooked style.—North shore of Lake Superior near Sand Bay, Minn., in bogs. (Joseph C. Jones.) Imperfectly known.

3. HEPÁTICA, Dill. Liver-leaf. Hepatica.

Involucre simple and 3-leaved, very close to the flower, so as to resemble a calyx; otherwise as in Anemone.—Leaves all radical, heart-shaped and 3-lobed, thickish and persistent through the winter, the new ones appearing later than the flowers, which are single, on hairy scapes. (Name from a fancied resemblance to the liver in the shape of the leaves.)

1. H. tríloba, Chaix. Leaves with 3 ovate obtuse or rounded lobes; those of the involucre also obtuse; sepals 6–12, blue, purplish, or nearly white; achenes several, in a small loose head, ovate-oblong, pointed, hairy.—Woods; common from the Atlantic to Mo., Minn., and northward, flowering soon after the snow leaves the ground in spring. (Eu.)

2. H. acutíloba, DC. Leaves with 3 ovate and pointed lobes, or sometimes 5-lobed; those of the involucre acute or acutish.—Passes into the other and has the same range.

4. ANEMONÉLLA, Spach.

Involucre compound, at the base of an umbel of flowers. Sepals 5–10, white and conspicuous. Petals none. Achenes 4–15, ovoid, terete, strongly 8–10-ribbed, sessile. Stigma terminal, broad and depressed.—Low glabrous perennial; leaves all radical, compound.

1. A. thalictroìdes, Spach. (Rue-Anemone.) Stem and slender petiole of radical leaf (a span high) rising from a cluster of thickened tuberous roots; leaves 2–3-ternately compound; leaflets roundish, somewhat 3-lobed at the end, cordate at the base, long-petiolulate, those of the 2–3-leaved 1–2-ternate involucre similar; flowers several in an umbel; sepals oval (½´ long, rarely pinkish), not early deciduous. (Thalictrum anemonoides, Michx.)—Woods, common, flowering in early spring with Anemone nemorosa, and considerably resembling it. Rarely the sepals are 3-lobed like the leaflets.

5. THALÍCTRUM, Tourn. Meadow-Rue.

Sepals 4–5, petal-like or greenish, usually caducous. Petals none. Achenes 4–15, grooved or ribbed, or else inflated. Stigma unilateral. Seed suspended.—Perennials, with alternate 2–3-ternately compound leaves, the divisions and the leaflets stalked; petioles dilated at base. Flowers in corymbs or panicles, often polygamous or diœcious. (Derivation obscure.)

[*] Flowers diœcious or sometimes polygamous, in ample panicles; filaments slender; stigmas elongated, linear or subulate; achenes sessile or short-stipitate, ovoid, pointed, strongly several-angled and grooved.

1. T. diòicum, L. (Early Meadow-Rue.) Smooth and pale or glaucous, 1–2° high; leaves (2–3) all with general petioles; leaflets drooping, rounded and 3–7-lobed; flowers purplish and greenish, diœcious; the yellowish anthers linear, mucronate, drooping on fine capillary filaments.—Rocky woods, etc.; common. April, May.

2. T. polýgamum, Muhl. (Tall M.) Smooth, not glandular, 4–8° high; stem-leaves sessile; leaflets rather firm, roundish to oblong, commonly with mucronate lobes or tips, sometimes puberulent beneath; panicles very compound; flowers white, the fertile ones with some stamens; anthers not drooping, small, oblong, blunt, the mostly white filaments decidedly thickened upwards. (T. Cornuti, Man., not L.)—Wet meadows and along rivulets, N. Eng. to Ohio and southward; common. July–Sept.

3. T. purpuráscens, L. (Purplish M.) Stem (2–4° high) usually purplish; stem-leaves sessile or nearly so; leaflets more veiny and reticulated beneath, with or without gland-tipped or glandless hairs or waxy atoms; panicles compound; flowers (sepals, filaments, etc.) greenish and purplish, diœcious; anthers linear or oblong-linear, mucronulate, drooping on capillary filaments occasionally broadened at the summit.—Dry uplands and rocky hills, S. New Eng. to Minn., and southward. May, June.

[*][*] Flowers all perfect, corymbed; the filaments strongly club-shaped or inflated under the small and short anther; stigma short; achenes gibbous, long-stipitate.

4. T. clavàtum, DC. Size and appearance of n. 1; leaves only twice ternate; flowers white, fewer; achenes 5–10, flat, somewhat crescent-shaped, tapering into the slender stipe.—Mountains of Va. and southward. June.

6. TRAUTVETTÈRIA, Fisch. & Mey. False Bugbane.

Sepals 3–5, usually 4, concave, petal-like, very caducous. Petals none. Achenes numerous, capitate, membranaceous, compressed-4-angled and inflated. Seed erect.—A perennial herb, with alternate palmately-lobed leaves, and corymbose white flowers. (For Prof. Trautvetter, a Russian botanist.)

1. T. palmàta, Fisch. & Mey. Stems 2–3° high; root-leaves large, 5–11-lobed, the lobes toothed and cut.—Moist ground along streamlets, Md. to S. Ind., and south to Ga.

7. ADÒNIS, Dill.

Sepals and petals (5–16) flat, unappendaged, deciduous. Achenes numerous, in a head, rugose-reticulated. Seed suspended.—Herbs with finely dissected alternate leaves and showy flowers. (Ἄδωνις, a favorite of Venus, after his death changed into a flower.)

A. autumnàlis, L. A low leafy annual, with scarlet or crimson flowers, darker in the centre.—Sparingly naturalized from Europe.

8. MYOSÙRUS, Dill. Mouse-tail.

Sepals 5, spurred at the base. Petals 5, small and narrow, raised on a slender claw, at the summit of which is a nectariferous hollow. Stamens 5–20. Achenes numerous, somewhat 3-sided, crowded on a very long and slender spike-like receptacle (whence the name, from μῦς, a mouse, and οὐρά, a tail), the seed suspended.—Little annuals, with tufted narrowly linear-spatulate root-leaves, and naked 1-flowered scapes. Flowers small, greenish.

1. M. mínimus, L. Fruiting spike 1–2´ long; achenes quadrate, blunt.—Alluvial ground, Ill. and Ky., thence south and west. (Eu.)

9. RANÚNCULUS, Tourn. Crowfoot. Buttercup.

Sepals 5. Petals 5, flat, with a little pit or scale at the base inside. Achenes numerous, in a head, mostly flattened, pointed; the seed erect.—Annuals or perennials; stem-leaves alternate. Flowers solitary or somewhat corymbed, yellow, rarely white. (Sepals and petals rarely only 3, the latter often more than 5. Stamens occasionally few.)—(A Latin name for a little frog; applied by Pliny to these plants, the aquatic species growing where frogs abound.)

R. Ficària, L. (representing the § Ficaria), which has tuberous-thickened roots, Caltha-like leaves, and scape-like peduncles bearing a 3-sepalous and 8–9-petalous yellow flower, has been found as an escape from gardens about New York and Philadelphia.

§ 1. BATRÁCHIUM. Petals with a spot or naked pit at base, white, or only the claw yellow; achenes marginless, transversely wrinkled; aquatic or subaquatic perennials, with the immersed foliage repeatedly dissected (mostly by threes) into capillary divisions; peduncles 1-flowered, opposite the leaves.

[*] Receptacle hairy.

1. R. circinàtus, Sibth. (Stiff Water-Crowfoot.) Leaves all under water and sessile, with broad conspicuous stipules, the divisions and subdivisions short, spreading in one roundish plane, rigid, not collapsing when withdrawn from the water. (R. divaricatus, Man., not Schrank.)—Ponds and slow streams, Maine and Vt., to Iowa, north and westward, much rarer than the next. June–Aug. (Eu.)

2. R. aquátilis, L., var. trichophýllus, Gray. (Common White Water-Crowfoot.) Leaves all under water and mostly petioled, their capillary divisions and subdivisions rather long and soft, usually collapsing more or less when withdrawn from the water; petiole rather narrowly dilated.—Common, especially in slow-flowing waters, the eastern form with more soft and flaccid leaves. June–Aug. (Eu.)

Var. cæspitòsus, DC. A dwarf terrestrial form, rooting at the nodes, the small leaves somewhat fleshy, with broader rigid divisions.—S. Ill. (Schneck), and westward.

[*][*] Receptacle glabrous; no submersed leaves.

R. hederàceus, L. Rooting freely in shallow water; leaves all reniform, angulate-lobed.—Fresh-water marshes at Norfolk, Va. (Nat. from Eu.)

§ 2. HALÒDES. Petals yellow, with nectariferous pit and scale; carpels thin-walled, striate, in an oblong head; scapose, spreading by runners.

3. R. Cymbalària, Pursh. (Sea-side Crowfoot.) Glabrous; scapes 1–6´ high, 1–7-flowered; leaves clustered at the root and on the joints of the long rooting runners, roundish-heart-shaped or kidney-shaped, crenate, rather fleshy, long-petioled; petals 5–8.—Sandy shores, from New Jersey northward, and along the Great Lakes to Ill., Kan. and westward; also at salt springs. June–Aug.

§ 3. RANUNCULUS proper. Petals with a little scale at the base, yellow; achenes nerveless.

[*] Achenes smooth; mostly perennial.

[+] Aquatic; immersed leaves filiformly dissected, as in § Batrachium.

4. R. multífidus, Pursh. (Yellow Water-Crowfoot.) Stems floating or immersed, with the leaves all repeatedly 3-forked into long filiform divisions, or sometimes creeping in the mud (perennial by rooting from the nodes, if at all); emersed leaves with shorter and linear or wedge-shaped divisions, or else kidney-shaped and sparingly lobed or toothed; petals 5–8, deep bright yellow, 4–6´´ long, much larger than the calyx; carpels in a round head, pointed with a straight beak.—E. New Eng. to S. Penn., Mo., and northward. May–July.—Out of water it is often pubescent, especially in

Var. terréstris, Gray. Stem rooting in the mud or ascending from the base; leaves all smaller, coarsely dissected, round-reniform in outline; flowers and fruit twice or thrice smaller.—N. Ohio to N. Ill., Minn., and westward.

[+][+] Terrestrial but growinq in very wet places, glabrous or nearly so; leaves entire or barely toothed, all or else all but the lowest lanceolate or linear; carpels forming a globular head. (Spearwort.)

5. R. ámbigens, Watson. (Water Plantain Spearwort.) Stems ascending (1–2° high), often rooting from the lower joints; leaves lanceolate or the lowest oblong, mostly denticulate (3–5´ long), contracted into a margined half-clasping petiole; petals 5–7, bright yellow, oblong (2–3´´ long); carpels flattened, large (1´´ long), pointed with a long narrow-subulate beak. (R. alismæfolius, Man., not Gey.)—N. Eng. to Ont., Minn. and southward; common, especially at the north. June–Aug.

6. R. Flámmula, L. (Smaller Spearwort.) Stem reclining or ascending, rooting below, leaves lanceolate or linear, or the lowest ovate-oblong to lanceolate, entire or nearly so, mostly petioled (1–2´ long), petals 5–7, much longer than the calyx, bright yellow, carpels small, flattish but turgid, mucronate with a short abrupt point.—Only a small form (var. intermèdius) met with in this country (shore of L. Ontario, and northward), a span high, with flowers 3–5´´ in diameter, passing into

Var. réptans, E. Meyer. (Creeping S.) Small, slender, the filiform creeping stems rooting at all the joints; leaves linear, spatulate, or oblong (¼–1´ long); flowers small.—Gravelly or sandy banks; Newf. to Penn., north and westward. June–Sept. (Eu.)

7. R. oblongifòlius, Ell. Usually annual; stem erect or ascending, often pubescent below, slender (1–2° high), diffusely branched above and many-flowered; leaves serrate or denticulate, lower long-petioled, ovate or oblong (½–1½´ long), uppermost linear; flowers 3–5´´ broad; petals 5, bright yellow, 1–3´´ long; carpels minute, almost globular, the small style deciduous.—Wet prairies, Ill., Mo., and in S. States. June.

8. R. pusíllus, Poir. Stem ascending, weak, loosely branching (6–18´ long); leaves entire or obscurely denticulate, the lowest round-ovate or heart-shaped (½´ long), long-petioled, the upper oblong or lanceolate (1–1½´ long); flowers very small; petals 1–5, yellowish; stamens 3–10; carpels very turgid, smooth or slightly papillose, tipped with a minute sessile stigma.—Wet places, S. New York, and southward along the coast. June–Aug.

[+][+][+] Terrestrial, but often in wet places; leaves mostly cleft or divided.

[++] Root-leaves not divided to the very base; achenes marginless.

9. R. affìnis, R. Br. Somewhat hairy or glabrous; low or slender, 1° high or less; leaves pedately cleft, the cauline with linear or narrow oblanceolate divisions; petals light yellow, 3–4´´ long or smaller; heads oblong; achenes turgid, with small and mostly recurved style, pubescent or glabrous.—And var. validus, Gray, stouter and with more fleshy leaves, the lower mostly undivided and roundish, cordate, truncate or cuneate at base, coarsely crenate or more or less cleft.—Minn., Iowa, north and westward.

10. R. rhomboídeus, Goldie. Low (3–8´ high), hairy; root-leaves roundish or rhombic-ovate, rarely subcordate, toothed or crenate; lowest stem-leaves similar or 3–5-lobed, the upper 3–5-parted, almost sessile, the lobes linear; carpels orbicular with a minute beak, in a globose head; petals large, deep yellow.—Prairies, Mich. to N. Ill., Minn., and northward. April, May.

11. R. abortìvus, L. (Small-flowered C.) Biennial, glabrous, branching, 6´–2° high; primary root-leaves round heart-shaped or kidney-form, barely crenate, the succeeding often 3-lobed or 3-parted; those of the stem and branches 3–5-parted or divided, subsessile, the divisions oblong or narrowly wedge-form, mostly toothed; head globose; carpels mucronate, with a minute curved beak; petals pale yellow, shorter than the small reflexed calyx.—Shady hillsides and along brooks, common. April–June.

Var. micránthus, Gray. Pubescent, roots often fusiform-thickened; root-leaves seldom at all heart-shaped, some 3-parted or 3-divided; peduncles more slender and carpels fewer.—E. Mass. to Ill., Minn., and westward.

12. R. sceleràtus, L. (Cursed C.) Annual, glabrous; root-leaves 3-lobed, rounded; lower stem-leaves 3-parted, the lobes obtusely cut and toothed, the uppermost almost sessile, with the lobes oblong-linear and nearly entire; carpels barely mucronulate, very numerous, in oblong or cylindrical heads; petals scarcely exceeding the calyx.—Wet ditches; appearing as if introduced. June–Aug.—Stem thick and hollow, 1° high; juice acrid and blistering; leaves thickish; flowers small, pale yellow. (Eu.)

[++][++] Leaves variously cleft or divided; achenes in globular heads (except n. 17), compressed, with an evident firm margin; hirsute or pubescent.

[=] Achenes with long recurved beak; root-leaves rarely divided.

13. R. recurvàtus, Poir. (Hooked C.) Hirsute, 1–2° high; leaves of the root and stem nearly alike, long-petioled, deeply 3-cleft, large; the lobes broadly wedge-shaped, 2–3-cleft, cut and toothed toward the apex; petals shorter than the reflexed calyx, pale.—Woods, common. May, June.

[=][=] Style long and attenuate, stigmatose at the tip, persistent or the upper part usually deciduous; early root-leaves only 3-parted, the later 3–5-foliolate; petals bright yellow, much larger than the calyx (except n. 18).

14. R. fasciculàris, Muhl. (Early C.) Low, ascending, 5–9´ high, pubescent with close-pressed silky hairs; root a cluster of thickened fleshy fibres; radical leaves appearing pinnate, the long-stalked terminal division remote from the sessile lateral ones, itself 3–5-divided or parted and 3–5-cleft, the lobes oblong or linear; petals often 6 or 7, spatulate-oblong, twice the length of the spreading calyx; carpels scarcely margined, tipped with a slender straight or rather curved beak.—Dry or moist hills. April, May.

15. R. septentrionàlis, Poir. Low, hairy or nearly glabrous; stems ascending, or in wet ground some of them procumbent or forming long runners; leaves 3-divided, the divisions all stalked (or at least the terminal one), broadly wedge-shaped or ovate, unequally 3-cleft or parted and variously cut, never pinnately compound; petals obovate, much larger than the spreading calyx; carpels strongly margined, pointed by a stout straightish beak. (R. repens, of Manual, mainly.)—Moist or shady places, etc., May–Aug.—Extremely variable in size and foliage, commencing to flower by upright stems in spring before any long runners are formed.

[=][=][=] Style subulate, stigmatose along the inner margin, mostly persistent.

16. R. rèpens, L. In habit and foliage closely similar to the last species; leaves frequently white-variegated or spotted; commencing to flower somewhat later.—In low grounds; generally in waste grounds near the coast and probably introduced from Europe, but indigenous westward.

17. R. Pennsylvánicus, L. f. (Bristly C.) Stout and erect from a usually annual root, hirsute with widely spreading bristly hairs, leafy to the top, 1–2° high; leaves all ternately divided or compound, the stalked leaflets unequally 3-cleft, sharply cut and toothed, acute; flowers inconspicuous; calyx reflexed; head of carpels oblong.—Wet places, common. June–Aug.

18. R. hìspidus, Hook. (not Michx. or DC.). Resembling the last, but the ascending or reclining stems few-leaved, rarely if ever rooting, not always hirsute; petals (about 3´´ long) surpassing the hardly reflexed and soon deciduous calyx; achenes with a stout straight beak, in a globose or oval head.—On the northern shore of Lake Superior, and north and westward; probably in N. Minn.

R. bulbòsus, L. (Bulbous C. or Buttercups.) Hairy; stem erect from a bulb-like base, 1° high; radical leaves 3-divided; the lateral divisions sessile, the terminal stalked and 3-parted, all wedge-shaped, cleft and toothed; peduncles furrowed; petals round, wedge shaped at base; calyx reflexed; carpels tipped with a very short beak.—Fields; very abundant only in E. New England; rare westward. May–July.—Leaves appearing as if pinnate. Petals often 6 or 7, deep glossy yellow, the corolla more than an inch broad. (Nat. from Eu.)

R. àcris, L. (Tall C. or Buttercups.) Hairy; stem erect (2–3° high); leaves 3-divided; the divisions all sessile and 3-cleft or parted, their segments cut into lanceolate or linear crowded lobes; peduncles not furrowed; petals obovate, much longer than the spreading calyx.—Fields; common, especially eastward. June–Aug.—Flower nearly as large as the last, but not so deep yellow.—The Buttercups are avoided by cattle, on account of their very acrid or even blistering juice, which property, however, is dissipated in drying when these plants are cut with hay. (Nat. from Eu.)

[*][*] Achenes beset with rough points or small prickles; annuals.

R. muricàtus, L. Nearly glabrous; lower leaves roundish or reniform, 3-lobed, coarsely crenate; the upper 3-cleft, wedge-form at the base; petals longer than the calyx; carpels flat, spiny-tuberculate on the sides, strongly beaked, surrounded with a wide and sharp smooth margin.—Eastern Virginia and southward. (Nat. from Eu.)

R. parviflòrus, L. Hairy, slender and diffuse; lower leaves roundish-cordate, 3-cleft, coarsely toothed or cut; the upper 3–5-parted; petals not longer than the calyx; carpels minutely hispid and rough, beaked, narrowly margined.—Norfolk, Va., and southward. (Nat. from Eu.)

10. ISOPỲRUM, L.

Sepals 5, petal-like, deciduous. Petals 5, minute, wanting in the American species. Stamens 10–40. Pistils 3–6 or more, pointed with the styles. Pods ovate or oblong, 2–several-seeded.—Slender smooth perennial herbs, with 2–3-ternately compound leaves; the leaflets 2–3-lobed. Flowers axillary and terminal, white. (From ἰσόπυρον, the ancient name of a Fumaria.)

1. I. biternàtum, Torr. & Gray. Petals none; filaments white, club-shaped; pistils 3–6 (commonly 4), divaricate in fruit, 2–3-seeded; seeds smooth.—Moist shady places, Ohio to Minn. and southward. May.—Fibres of the root thickened here and there into little tubers. Aspect and size of the plant much as in Anemonella.

11. CÁLTHA, L. Marsh Marigold.

Sepals 5–9, petal-like. Petals none. Pistils 5–10, with scarcely any styles. Pods (follicles) compressed, spreading, many-seeded.—Glabrous perennials, with round and heart-shaped or kidney-form, large, undivided leaves. (An ancient Latin name for the common Marigold.)

1. C. palústris, L. Stem hollow, furrowed; leaves round or kidney-shaped, either crenate or dentate or nearly entire; sepals broadly oval (bright yellow).—Swamps and wet meadows, common northward. April, May.—Often called incorrectly Cowslips; used as a pot-herb in spring, when coming into flower. C. flabellifolia, Pursh, is a weak slender form, with open-reniform leaves and smaller flowers (1´ broad or less), occurring in cold mountain springs, N. Y. to Md. (Eu.)

12. TRÓLLIUS, L. Globe-flower.

Sepals 5–15, petal-like. Petals numerous, small, 1-lipped, the concavity near the base. Stamens and pistils numerous. Pods 9 or more, sessile, many-seeded.—Smooth perennials with palmately parted and cut leaves, like Ranunculus, and large solitary terminal flowers. (Name thought to be derived from the old German word troll, a globe, or something round.)

1. T. láxus, Salisb. (Spreading Globe-flower.) Leaves 5–7-parted; sepals 5–6, spreading; petals 15–25, inconspicuous, much shorter than the stamens.—Deep swamps, N. H. to Del. and Mich. May.—Flowers twice the size of the common Buttercup; the sepals spreading, so that the name is not appropriate, as it is to the European Globe-flower of the gardens, nor is the blossom showy, being pale greenish-yellow, or nearly white.

13. CÓPTIS, Salisb. Goldthread.

Sepals 5–7, petal-like, deciduous. Petals 5–7, small, club-shaped, hollow at the apex. Stamens 15–25. Pistils 3–7, on slender stalks. Pods divergent, membranaceous, pointed with the style, 4–8-seeded.—Low smooth perennials, with ternately divided root-leaves, and small white flowers on scapes. (Name from κόπτω, to cut, alluding to the divided leaves.)

1. C. trifòlia, Salisb. (Three-leaved Goldthread.) Leaflets 3, obovate-wedge-form, sharply toothed, obscurely 3-lobed, scape 1-flowered.—Bogs, abundant northward, extending south to Maryland along the mountains, and west to Iowa. May.—Root of long, bright yellow, bitter fibres. Leaves evergreen, shining. Scape naked, slender, 3–5´ high. (Eu.)

14. HELLÉBORUS, Tourn. Hellebore.

Sepals 5, petal-like or greenish, persistent. Petals 8–10, very small, tubular, 2-lipped. Pistils 3–10, sessile, forming coriaceous many-seeded pods.—Perennial herbs, with ample palmate or pedate leaves, and large, solitary, nodding, early vernal flowers. (An ancient name of unknown meaning.)

H. víridis, L. (Green Hellebore.) Root-leaves glabrous, pedate; calyx spreading, greenish.—Has been found wild on Long Island, in Penn., and W. Va. (Adv. from Eu.)

15. ERÁNTHIS, Salisb. Winter Aconite.

Sepals 5–8, petal-like, deciduous. Petals small 2-lipped nectaries. Carpels few, stipitate, several-seeded.—Perennial herbs, with palmately multifid radical leaves, the scape bearing a single large yellow flower surrounded by an involucre of a single leaf. (Name from ἦρ, spring, and ἄνθος, flower.)

E. hyemàlis, Salisb. Dwarf; flowers cup-shaped, 1½´ in diameter; petals shorter than the stamens.—Near Philadelphia. (Adv. from Eu.)

16. AQUILÈGIA, Tourn. Columbine.

Sepals 5, regular, colored like the petals. Petals 5, all alike, with a short spreading lip, produced backward into large hollow spurs, much longer than the calyx. Pistils 5, with slender styles. Pods erect, many-seeded.—Perennials, with 2–3-ternately compound leaves, the leaflets lobed. Flowers large and showy, terminating the branches. (Name from aquilegus, water-drawing.)

1. A. Canadénsis, L. (Wild Columbine.) Spurs nearly straight; stamens and styles longer than the ovate sepals.—Rocks, common. April–June.—Flowers 2´ long, scarlet, yellow inside (or rarely all over), nodding, so that the spurs turn upward, but the stalk becomes upright in fruit.

2. A. brevístyla, Hook. Flowers small, blue or purplish or nearly white; spurs incurved.—Red River valley, Dak.; Rocky Mts., northward.

A. vulgàris, L., the common Garden Columbine, of Europe, with hooked spurs, is beginning to escape from cultivation in some places.

17. DELPHÍNIUM, Tourn. Larkspur.

Sepals 5, irregular, petal-like; the upper one prolonged into a spur at the base. Petals 4, irregular, the upper pair continued backward into long spurs which are enclosed in the spur of the calyx, the lower pair with short claws; rarely only 2, united into one. Pistils 1–5, forming many-seeded pods in fruit.—Leaves palmately divided or cut. Flowers in terminal racemes. (Name from Delphin, in allusion to the shape of the flower, which is sometimes not unlike the classical figures of the dolphin.)

[*] Perennials, indigenous; pistils 3.

1. D. exaltàtum, Ait. (Tall Larkspur.) Stem slender, 2–5° high; leaves deeply 3–5-cleft, the divisions narrow wedge-form, diverging, 3-cleft at the apex, acute; racemes wand-like, panicled, many-flowered; flowers purplish-blue, downy; spur straight; pods erect.—Rich soil, Penn. to Minn. and southward. July.

2. D. tricórne, Michx. (Dwarf L.) Leaves deeply 5-parted, their divisions unequally 3–5-cleft; the lobes linear, acutish; raceme few-flowered, loose; spur straightish, ascending; pods strongly diverging.—W. Penn. to Minn. and southward. April, May.—Root a tuberous cluster. Stem simple, 6´–3° high. Flowers bright blue, sometimes white, occasionally numerous.

3. D. azùreum, Michx. Leaves deeply 3–5-parted, the divisions 2–3 times cleft; the lobes all narrowly linear; raceme strict; spur ascending, usually curved upward; pods erect.—Wisc. to Dak. and southward. May, June.—Stem 1–2° high, slender, often softly pubescent. Flowers sky-blue or whitish.

[*][*] Annual, introduced; petals 2, united into one body; pistil single.

D. Consólida, L. (Field L.) Leaves dissected into narrow linear lobes; inflorescence loosely paniculate; pedicels shorter than the bracts; pod glabrous.—Old grain-fields, Penn. and Va.; also sparingly along roadsides farther north. (Nat. from Eu.)

D. Ajàcis, L. Flowers more numerous and spicately racemose; pods pubescent.—Sparingly escaped from gardens in E. Atlantic States. (Nat. from Eu.)

18. ACONÌTUM, Tourn. Aconite. Monkshood. Wolfsbane.

Sepals 5, petal-like, very irregular; the upper one (helmet) hooded or helmet-shaped, larger than the others. Petals 2 (the 3 lower wanting entirely, or very minute rudiments among the stamens), consisting of small spur-shaped bodies raised on long claws and concealed under the helmet. Pistils 3–5. Pods several-seeded. Seed-coat usually wrinkled or scaly.—Perennials, with palmately cleft or dissected leaves, and showy flowers in racemes or panicles. (The ancient Greek and Latin name, of uncertain origin.)

1. A. Noveboracénse, Gray. Erect from tuberous-thickened roots, 2° high, leafy, the summit and strict loosely flowered raceme pubescent; leaves rather deeply parted, the broadly cuneate divisions 3-cleft and incised; flowers blue, the helmet gibbous-obovate with broad rounded summit and short descending beak.—Chenango and Orange Cos., N. Y.

2. A. uncinàtum, L. (Wild Monkshood.) Glabrous; stem slender, from tuberous-thickened roots, erect, but weak and disposed to climb; leaves firm, deeply 3–5-lobed, petioled, the lobes ovate-lanceolate, coarsely toothed; flowers blue; helmet erect, obtusely conical, compressed, slightly beaked in front.—Rich shady soil along streams, Penn., and southward in the mountains; Wisc. June–Aug.

3. A. reclinàtum, Gray. (Trailing Wolfsbane.) Glabrous; stems trailing (3–8° long); leaves deeply 3–7-cleft, petioled, the lower orbicular in outline; the divisions wedge-form, incised, often 2–3-lobed; flowers white, in very loose panicles; helmet soon horizontal, elongated-conical, with a straight beak in front.—Cheat Mountain, Va., and southward in the Alleghanies. Aug.—Lower leaves 5–6´ wide. Flowers 9´´ long, nearly glabrous.

19. CIMICÍFUGA, L. Bugbane.

Sepals 4 or 5, falling off soon after the flower expands. Petals, or rather transformed stamens, 1–8, small, on claws, 2-horned at the apex. Stamens as in Actæa. Pistils 1–8, forming dry dehiscent pods in fruit.—Perennials, with 2–3-ternately-divided leaves, the leaflets cut-serrate, and white flowers in elongated wand-like racemes. (Name from cimex, a bug, and fugo, to drive away.)

§ 1. CIMICIFUGA proper. Pistils 3–8, stipitate; seeds flattened laterally, covered with chaffy scales, in one row in the membranaceous pods; style awl-shaped; stigma minute.

1. C. Americàna, Michx. (American Bugbane.) Stem 2–4° high; racemes slender, panicled, ovaries mostly 5, glabrous; pods flattened, veiny, 6–8-seeded.—Mountains of S. Penn. and southward. Aug.–Sept.

§ 2. MACRÒTYS. Pistil solitary, sometimes 2–3, sessile; seeds smooth, flattened and packed horizontally in the pod in two rows, as in Actæa; stigma broad and flat.

2. C. racemòsa, Nutt. (Black Snakeroot. Black Cohosh.) Stem 3–8° high, from a thick knotted rootstock; racemes in fruit becoming 1–3° long; pods ovoid.—Rich woods, Maine to Wisc., and southward. July.—Var. dissécta, Gray. Leaves irregularly pinnately decompound, the rather small leaflets incised.—Centreville, Del. (Commons.)

20. ACTÆ̀A, L. Baneberry. Cohosh.

Sepals 4 or 5, falling off when the flower expands. Petals 4–10, small, flat, spatulate, on slender claws. Stamens numerous, with slender white filaments. Pistil single; stigma sessile, depressed, 2-lobed. Fruit a many-seeded berry. Seeds smooth, flattened, and packed horizontally in 2 rows.—Perennials, with ample 2–3-ternately compound leaves, the ovate leaflets sharply cleft and toothed, and a short and thick terminal raceme of white flowers. (From ἀκτέα, actæa, ancient names of the elder, transferred by Linnæus.)

1. A. spicàta, L., var. rùbra, Ait. (Red Baneberry.) Raceme ovate; petals rhombic-spatulate, much shorter than the stamens; pedicels slender; berries cherry-red, or sometimes white, oval.—Rich woods, common, especially northward. April, May.—Plant 2° high. (Eu.)

2. A. álba, Bigel. (White Baneberry.) Leaflets more incised and sharply toothed; raceme oblong; petals slender, mostly truncate at the end, appearing to be transformed stamens; pedicels thickened in fruit, as large as the peduncle and red, the globular-oval berries white.—Rich woods, flowering a week or two later than the other, and more common westward and southward.—White berries rarely occur with slender pedicels, also red berries with thick pedicels; but these are perhaps the result of crossing.

21. HYDRÁSTIS, Ellis. Orange-root. Yellow Puccoon.

Sepals 3, petal-like, falling away when the flower opens. Petals none. Pistils 12 or more in a head, 2-ovuled; stigma flat, 2-lipped. Ovaries becoming a head of crimson 1–2-seeded berries in fruit.—A low perennial herb, sending up in early spring, from a thick and knotted yellow rootstock, a single radical leaf and a simple hairy stem, which is 2-leaved near the summit and terminated by a single greenish-white flower. (Name unmeaning.)

1. H. Canadénsis, L. (Golden Seal, etc.) Leaves rounded, heart-shaped at the base, 5–7-lobed, doubly serrate, veiny, when full grown in summer 4–9´ wide.—Rich woods, N. Y. to Minn., and southward.

22. XANTHORRHÌZA, Marshall. Shrub Yellow-root.

Sepals 5, regular, spreading, deciduous. Petals 5, much smaller than the sepals, concave and obscurely 2-lobed, raised on a claw. Stamens 5 to 10. Pistils 5–15, with 2 pendulous ovules. Pods 1-seeded, oblong, the short style becoming dorsal.—A low shrubby plant; the bark and long roots deep yellow and bitter. Flowers polygamous, brown purple, in compound drooping racemes, appearing along with the 1–2-pinnate leaves from large terminal buds in early spring. (Name compounded of ξανθός, yellow, and ῥίζα, root.)

1. X. apiifòlia, L'Her. Stems clustered, 1–2° high; leaflets cleft and toothed.—Shady banks of streams, Penn. to S. W. New York and Ky., and south in the mountains. The rootstocks of this, and also of the last plant, were used as a yellow dye by the aborigines.

Nigélla Damascèna, L., the Fennel-flower, which offers a remarkable exception in having the pistils partly united into a compound ovary, so as to form a several-celled capsule, grows nearly spontaneously around gardens.

Order 2. MAGNOLIÀCEÆ. (Magnolia Family.)

Trees or shrubs, with the leaf-buds covered by membranous stipules, polypetalous, hypogynous, polyandrous, polygynous; the calyx and corolla colored alike, in three or more rows of three, and imbricated (rarely convolute) in the bud.—Sepals and petals deciduous. Anthers adnate. Pistils many, mostly packed together and covering the prolonged receptacle, cohering with each other, and in fruit forming a sort of fleshy or dry cone. Seeds 1 or 2 in each carpel, anatropous; albumen fleshy; embryo minute.—Leaves alternate, not toothed, marked with minute transparent dots, feather-veined. Flowers single, large. Bark aromatic and bitter.

1. MAGNÒLIA, L.

Sepals 3. Petals 6–9. Stamens imbricated, with very short filaments, and long anthers opening inward. Pistils coherent, forming a fleshy and rather woody cone-like red fruit; each carpel at maturity opening on the back, from which the 1 or 2 berry-like seeds hang by an extensile thread composed of unrolled spiral vessels. Inner seed-coat bony.—Buds conical, the coverings formed of the successive pairs of stipules, each pair enveloping the leaf next above, which is folded lengthwise and applied straight against the side of the next stipular sheath, and so on. (Named after Magnol, Professor of Botany at Montpellier in the 17th century.)

[*] Leaves all scattered along the branches; leaf-buds silky.

1. M. glaùca, L. (Small or Laurel Magnolia. Sweet Bay.) Leaves oval to broadly lanceolate, 3–6´ long, obtuse, glaucous beneath; flower globular, white, 2´ long, very fragrant; petals broad; cone of fruit small, oblong.—Swamps, from near Cape Ann and N. Y. southward, near the coast; in Penn. as far west as Cumberland Co. June–Aug.—Shrub 4–20° high, with thickish leaves, which farther south are evergreen.

2. M. acuminàta, L. (Cucumber-tree.) Leaves thin, oblong, pointed, green and a little pubescent beneath, 5–10´ long; flower oblong bell-shaped, glaucous-green tinged with yellow, 2´ long; cone of fruit 2–3´ long, cylindrical.—Rich woods, western N. Y. to Ill., and southward. May, June.—Tree 60–90° high. Fruit when young slightly resembling a small cucumber, whence the common name.

3. M. macrophýlla, Michx. (Great-leaved Magnolia.) Leaves obovate-oblong, cordate at the narrowed base, pubescent and white beneath; flower open bell-shaped, white, with a purple spot at base; petals ovate, 6´ long; cone of fruit ovoid.—S. E. Ky. and southward. May, June.—Tree 20–40° high. Leaves 1–3° long, somewhat clustered on the flowering branches.

[*][*] Leaves crowded on the summit of the flowering branches in an umbrella-like circle; leaf-buds glabrous; flowers white, slightly scented.

4. M. Umbrélla, Lam. (Umbrella-tree.) Leaves obovate-lanceolate, pointed at both ends, soon glabrous, 1–2° long; petals obovate-oblong, 4–5´ long.—S. Penn. to Ky. and southward. May.—A small tree. Fruit rose-color, 4–5´ long, ovoid-oblong.

5. M. Fràseri, Walt. (Ear-leaved Umbrella-tree.) Leaves oblong-obovate or spatulate, auriculate at the base, glabrous, 8–20´ long; petals obovate-spatulate, with narrow claws, 4´ long.—Va. and Ky., along the Alleghanies, and southward. April, May.—A slender tree 30–50° high. Flower more graceful and cone of fruit smaller than in the preceding.

2. LIRIODÉNDRON, L. Tulip-tree.

Sepals 3, reflexed. Petals 6, in two rows, making a bell-shaped corolla. Anthers linear, opening outward. Pistils flat and scale-form, long and narrow, imbricating and cohering together in an elongated cone, dry, separating from each other and from the long and slender axis in fruit, and falling away whole, like a samara or key, indehiscent, 1–2-seeded in the small cavity at the base. Buds flat, sheathed by the successive pairs of flat and broad stipules joined at their edges, the folded leaves bent down on the petiole so that the apex points to the base of the bud. (Name from λίριον, lily or tulip, and δένδρον, tree.)

1. L. Tulipífera, L.—Rich soil, S. New Eng. to Mich., Wisc., and southward. May, June.—A most beautiful tree, sometimes 140° high and 8–9° in diameter in the Western States, where it is wrongly called White Poplar. Leaves very smooth, with 2 lateral lobes near the base, and 2 at the apex, which appears as if cut off abruptly by a broad shallow notch. Petals 2´ long, greenish-yellow marked with orange. Cone of fruit 3´ long.

Order 3. ANONÀCEÆ. (Custard-Apple Family.)

Trees or shrubs, with naked buds and no stipules, a calyx of 3 sepals, and a corolla of 6 petals in two rows, valvate in the bud, hypogynous, polyandrous.—Petals thickish. Anthers adnate, opening outward; filaments very short. Pistils several or many, separate or cohering in a mass, fleshy or pulpy in fruit. Seeds anatropous, large, with a crustaceous seed-coat, and a minute embryo at the base of the ruminated albumen.—Leaves alternate, entire, feather-veined. Flowers axillary, solitary.—A tropical family, excepting the following genus:—

1. ASÍMINA, Adans. North American Papaw.

Petals 6, increasing after the bud opens; the outer set larger than the inner. Stamens numerous in a globular mass. Pistils few, ripening 1–4 large and oblong pulpy several-seeded fruits. Seeds horizontal, flat, enclosed in a fleshy aril.—Shrubs or small trees with unpleasant odor when bruised, the lurid flowers solitary from the axils of last year's leaves. (Name from Asiminier, of the French colonists, from the Indian name assimin.)

1. A. tríloba, Dunal. (Common Papaw.) Leaves thin, obovate-lanceolate, pointed; petals dull-purple, veiny, round-ovate, the outer ones 3–4 times as long as the calyx.—Banks of streams in rich soil, western N. Y. and Penn. to Ill., S. E. Neb., and southward. April, May.—Tree 10–20° high; the young shoots and expanding leaves clothed with a rusty down, soon glabrous. Flowers appearing with the leaves, 1½´ wide. Fruits 3–4´ long, yellowish, sweet and edible in autumn.

Order 4. MENISPERMÀCEÆ. (Moonseed Family.)

Woody climbers, with palmate or peltate alternate leaves, no stipules, the sepals and petals similar, in three or more rows, imbricated in the bud; hypogynous, diœcious, 3–6-gynous; fruit a 1-seeded drupe, with a large or long curved embryo in scanty albumen.—Flowers small. Stamens several. Ovaries nearly straight, with the stigma at the apex, but often incurved in fruiting, so that the seed and embryo are bent into a crescent or ring.—Chiefly a tropical family.

[*] Sepals and petals present. Anthers 4-celled. Seed incurved.

1. Cocculus. Stamens, petals, and sepals each 6.

2. Menispermum. Stamens 12–24, slender. Petals 6–8.

[*][*] Petals none. Anthers 2-celled. Seed saucer-shaped.

3. Calycocarpum. Stamens in the sterile flowers 12; in the fertile flowers 6, abortive.

1. CÓCCULUS, DC.

Sepals, petals, and stamens 6, alternating in threes, the two latter short. Anthers 4-celled. Pistils 3–6 in the fertile flowers; style pointed. Drupe and seed as in Menispermum.—Flowers in axillary racemes or panicles. (An old name, a diminutive of coccus, κόκκος, a berry.)

1. C. Carolìnus, DC. Minutely pubescent; leaves downy beneath, ovate or cordate, entire or sinuately or hastately lobed, variable in shape; flowers greenish, the petals in the sterile ones auriculate-inflexed below around the filaments; drupe red (as large as a small pea).—River-banks, Va. to S. Ill., Kan., and southward. July, Aug.

2. MENISPÉRMUM, L. Moonseed.

Sepals 4–8. Petals 6–8, short. Stamens 12–24 in the sterile flowers, as long as the sepals; anthers 4-celled. Pistils 2–4 in the fertile flowers, raised on a short common receptacle; stigma broad and flat. Drupe globular, the mark of the stigma near the base, the ovary in its growth after flowering being strongly incurved, so that the (wrinkled and grooved) laterally flattened stone takes the form of a large crescent or ring. The slender embryo therefore is horseshoe-shaped; cotyledons filiform.—Flowers white, in small and loose axillary panicles. (Name from μήνη, moon, and σπέρμα, seed.)

1. M. Canadénse, L. Leaves peltate near the edge, 3–7-angled or lobed.—Banks of streams; common. June, July.—Drupes black with a bloom, ripe in September, looking like frost grapes.

3. CALYCOCÁRPUM, Nutt. Cupseed.

Sepals 6, petaloid. Petals none. Stamens 12 in the sterile flowers, short; anthers 2-celled. Pistils 3, spindle-shaped, tipped with a radiate many-cleft stigma. Drupe globular; the thin crustaceous putamen hollowed out like a cup on one side. Embryo foliaceous, heart-shaped.—Flowers greenish-white, in long racemose panicles. (Name from κάλυξ, a cup, and καρπός, fruit.)

1. C. Lyòni, Nutt. Leaves large, thin, deeply 3–5-lobed, cordate at the base; the lobes acuminate; drupe an inch long, black when ripe; the shell crested-toothed on the edge of the cavity.—Rich soil, Ky. to S. Ill. and Kan., and southward. May.—Stems climbing to the tops of trees.

Order 5. BERBERIDÀCEÆ. (Barberry Family.)

Shrubs or herbs, with the sepals and petals both imbricated in the bud, usually in two rows of 3 (rarely 2 or 4) each; the hypogynous stamens as many as the petals and opposite to them; anthers opening by 2 valves or lids hinged at the top. (Podophyllum is an exception, and Jeffersonia as respects the sepals in one row.) Pistil single. Filaments short. Style short or none. Fruit a berry or a pod. Seeds few or several, anatropous, with albumen. Embryo small, except in Berberis. Leaves alternate, with dilated bases or stipulate.

[*] Petals and stamens 6. Fruit few-seeded.

1. Berberis. Shrubs, with yellow flowers and wood; a pair of glandular spots on the base of each petal. Fruit a berry.

2. Caulophyllum. Herb, with greenish flowers; petals thick, much shorter than the sepals. Ovary soon bursting; the two seeds left naked.

3. Diphylleia. Herb with white flowers; petals much longer than the sepals. Berry 2–4-seeded.

[*][*] Petals 6–9. Stamens 8–18. Fruit many-seeded. Herbs.

4. Jeffersonia. Petals and stamens usually 8; anthers opening by uplifted valves. Pod opening by a lid.

5. Podophyllum. Petals 6–9. Stamens 12–18; anthers not opening by uplifted valves. Fruit a large berry.

1. BÉRBERIS, L. Barberry.

Sepals 6, roundish, with 2–6 bractlets outside. Petals 6, obovate, concave, with two glandular spots inside above the short claw. Stamens 6. Stigma circular, depressed. Fruit a 1–few-seeded berry. Seeds erect, with a crustaceous integument.—Shrubs, with yellow wood and inner bark, yellow flowers in drooping racemes, sour berries, and 1–9-foliolate leaves. Stamens irritable. (Derived from Berbêrys, the Arabic name of the fruit.)

1. B. Canadénsis, Pursh. (American Barberry.) Leaves repandly toothed, the teeth less bristly-pointed; racemes few-flowered; petals notched at the apex; berries oval; otherwise as in the next.—Alleghanies of Va. and southward; not in Canada. June.—Shrub 1–3° high.

B. vulgàris, L. (Common Barberry.) Leaves scattered on the fresh shoots of the season, mostly reduced to sharp triple or branched spines, from the axils of which the next season proceed rosettes or fascicles of obovate-oblong closely bristly-toothed leaves (the short petiole jointed!), and drooping many-flowered racemes; petals entire; berries oblong, scarlet.—Thickets and waste grounds in E. New Eng., where it has become thoroughly wild; elsewhere occasionally spontaneous. May, June. (Nat. from Eu.)

2. CAULOPHÝLLUM, Michx. Blue Cohosh.

Sepals 6, with 3 or 4 small bractlets at the base, ovate-oblong. Petals 6 thick and gland-like somewhat kidney-shaped or hooded bodies, with short claws, much smaller than the sepals, one at the base of each of them. Stamens 6; anthers oblong. Pistil gibbous; style short; stigma minute and unilateral; ovary bursting soon after flowering by the pressure of the 2 erect, enlarging seeds, and withering away; the spherical seeds naked on their thick seed-stalks, looking like drupes, the fleshy integument turning blue; albumen horny.—A perennial glabrous herb, with matted knotty rootstocks, sending up in early spring a simple and naked stem, terminated by a small raceme or panicle of yellowish-green flowers, and a little below bearing a large triternately compound sessile leaf (whence the name, from καυλός, stem, and φύλλον, leaf, the stem seeming to form a stalk for the great leaf.)

1. C. thalictroìdes, Michx. (Also called Pappoose-root.) Stems 1–2½° high; leaflets obovate wedge-form, 2–3-lobed, a smaller biternate leaf often at the base of the panicle; flowers appearing while the leaf is yet small.—Deep rich woods; common westward. April, May.—Whole plant glaucous when young, as also the seeds, which are as large as peas.

3. DIPHYLLÈIA, Michx. Umbrella-leaf.

Sepals 6, fugacious. Petals 6, oval, flat, larger than the sepals. Stamens 6; anthers oblong. Ovary oblong; style hardly any; stigma depressed. Ovules 5 or 6, attached to one side of the cell below the middle. Berry globose, few-seeded. Seeds oblong, with no aril.—A perennial glabrous herb, with thick horizontal rootstocks, sending up each year either a huge centrally peltate and cut-lobed, rounded, umbrella-like radical leaf, on a stout stalk, or a flowering stem bearing two similar (but smaller and more 2-cleft) alternate leaves which are peltate near one margin, and terminated by a cyme of white flowers. (Name composed of δίς, double, and φύλλον, leaf.)

1. D. cymòsa, Michx. Root-leaves 1–2° in diameter, 2-cleft, each division 5–7-lobed; lobes toothed; berries blue.—Wet or springy places, mountains of Va. and southward. May.

4. JEFFERSÒNIA, Barton. Twin-leaf.

Sepals 4, fugacious. Petals 8, oblong, flat. Stamens 8, anthers oblong-linear, on slender filaments. Ovary ovoid, soon gibbous, pointed, stigma 2-lobed. Pod pear-shaped, opening half-way round horizontally, the upper part making a lid. Seeds many in several rows on the lateral placenta, with a fleshy lacerate aril on one side.—A perennial glabrous herb, with matted fibrous roots, long-petioled root-leaves, parted into 2 half-ovate leaflets, and simple naked 1-flowered scapes. (Named in honor of Thomas Jefferson.)

1. J. diphýlla, Pers. Low; flower white, 1´ broad, the parts rarely in threes or fives.—Woods, western N. Y. to Wisc. and southward. April, May.—Called Rheumatism-root in some places.

5. PODOPHÝLLUM, L. May-apple. Mandrake.

Flower-bud with three green bractlets, which early fall away. Sepals 6, fugacious. Petals 6 or 9, obovate. Stamens twice as many as the petals in our species; anthers linear-oblong, not opening by uplifted valves. Ovary ovoid; stigma sessile, large, thick and undulate. Fruit a large fleshy berry. Seeds covering the very large lateral placenta, in many rows, each seed enclosed in a pulpy aril, all forming a mass which fills the cavity of the fruit.—Perennial herbs, with creeping rootstocks and thick fibrous roots. Stems 2-leaved, 1-flowered. (Name from ποῦς, a foot, and φύλλον, a leaf, probably referring to the stout petioles.)

1. P. peltàtum, L. Stamens 12–18; leaves 5–9-parted, the lobes oblong, rather wedge-shaped, somewhat lobed and toothed at the apex.—Rich woods, common. May.—Flowerless stems terminated by a large round 7–9-lobed leaf, peltate in the middle like an umbrella. Flowering stems bearing two one-sided leaves, with the stalk fixed near their inner edge; the nodding white flower from the fork nearly 2´ broad. Fruit ovoid, 1–2´ long, ripe in July, sweet and slightly acid, edible. The leaves and roots are drastic and poisonous!—Found occasionally with from 2 to 6 carpels!

Order 6. NYMPHÆÀCEÆ. (Water-Lily Family.)

Aquatic perennial herbs, with horizontal rootstocks and peltate or sometimes only cordate leaves floating or emersed; the ovules borne on the sides or back (or when solitary hanging from the summit) of the cells, not on the ventral suture; the embryo enclosed in a little bag at the end of the albumen next the hilum, except in Nelumbium, which has no albumen. Radicle hardly any; cotyledons thick and fleshy, enclosing a well-developed plumule.—Flowers axillary, solitary. Vernation involute. Rootstocks apparently endogenous.—The few genera differ so much in the flower and fruit that they are separated into the three following suborders.

Suborder I. Cabómbeæ. Sepals and petals each 3 or sometimes 4, hypogynous and persistent. Stamens definite (3–18). Pistils 2–18, free and distinct, coriaceous and indehiscent, 1–3-seeded on the dorsal suture.—Stems slender, leafy, coated with mucilage. Flowers small.

1. Cabomba. Stamens 3–4. Carpels 2–3. Submersed leaves capillary-multifid.

2. Brasenia. Stamens 12–18. Carpels 4–18. Leaves all peltate.

Suborder II. Nelumbòneæ. Sepals and petals numerous in several rows, passing gradually into each other, and with the indefinitely numerous stamens hypogynous and deciduous. Pistils several, 1-ovuled, separately immersed in the obconical receptacle, which is much enlarged and broadly top-shaped at maturity, the imbedded nut-like fruits resembling small acorns. Embryo large; no albumen.—Petioles and peduncles all from the tuberous rootstock, the centrally peltate leaves and the flowers large.

3. Nelumbo. Character of the Suborder.

Suborder III. Nymphæaceæ proper. Sepals 4–6, and petals numerous in many rows, persistent or decaying away, either hypogynous or variously adnate to the surface of the compound 8–30-celled ovary, which is formed by the union of as many carpels; the numerous ovules inserted over the whole inner face of the cells, except at the ventral suture. Stigmas radiate as in Poppy. Fruit baccate, with a firm rind. Petioles and peduncles from a thick rootstock.

4. Nymphæa. Petals adnate to the ovary, large; the stamens on its summit.

5. Nuphar. Petals (very small and stamen-like) and stamens inserted under the ovary.

1. CABÓMBA, Aublet.

Sepals 3. Petals 3, oval, bi-auriculate above the very short claw. Stamens 3–6; anthers short, extrorse. Pistils 2–4, with small terminal stigmas. Seeds 3, pendulous.—Slender, mainly submersed, with opposite or verticillate capillary-dissected leaves, a few floating, alternate and centrally peltate. Flowers single on long axillary peduncles. (Probably an aboriginal name.)

1. C. Caroliniàna, Gray. Floating leaves linear-oblong or -obovate, often with a basal notch; flowers 6–8´´ broad, white with yellow spots at base; stamens 6.—Ponds, S. Ill. (May–Sept., Schneck) to Fla. and Tex.

2. BRASÈNIA, Schreber. Water-Shield.

Sepals 3 or 4. Petals 3 or 4, linear, sessile. Stamens 12–18; filaments filiform; anthers innate. Pistils 4–18, forming little club-shaped indehiscent pods; stigmas linear. Seeds 1–2, pendulous on the dorsal suture!—Rootstock creeping. Leaves alternate, long-petioled, centrally peltate, oval, floating. Flowers axillary, small, dull-purple. (Name of uncertain origin.)

1. B. peltàta, Pursh. Leaves entire, 1–4´ across.—Ponds and slow streams. June–Aug. (Asia, Africa and Australia.)

3. NELÚMBO, Tourn. Sacred Bean.

The only genus of the suborder. (Nelumbo is the Ceylonese name of the East Indian species, the pink-flowered N. speciosum.)

1. N. lùtea, Pers. (Yellow Nelumbo, or Water Chinquapin.) Leaves usually raised high out of the water, circular, with the centre depressed or cupped, 1–2° in diameter; flower pale yellow, 5–10´ broad; anthers tipped with a slender hooked appendage. (Nelumbium luteum, Willd.)—S. Conn. (probably of Indian introduction) to Lake Ontario, Mich., Minn., E. Neb., and southward; rare in the Middle States.—Tubers farinaceous and edible. Seeds also eatable. Embryo like that of Nymphæa on a large scale; cotyledons thick and fleshy, enclosing a plumule of 1 or 2 well-formed young leaves, enclosed in a delicate stipule-like sheath.

4. NYMPHÆ̀A, Tourn. Water-Nymph. Water-Lily.

Sepals 4, green outside, nearly free. Petals numerous, in many rows, the innermost gradually passing into stamens, imbricately inserted all over the ovary. Stamens indefinite, inserted on the ovary, the outer with dilated filaments. Ovary 12–35-celled, the concave summit tipped with a globular projection at the centre, around which are the radiate stigmas; these project at the margin, and are extended into linear and incurved sterile appendages. Fruit depressed-globular, covered with the bases of the decayed petals, maturing under water. Seeds enveloped by a sac-like aril.—Flowers white, pink, yellow, or blue, very showy. (Dedicated by the Greeks to the Water-Nymphs.)

1. N. odoràta, Ait. (Sweet-scented Water-Lily.) Rootstock with few and persistent branches; leaves orbicular, cordate-cleft at the base to the petiole (5–9´ wide), the margin entire; stipules broadly triangular or almost kidney-shaped, notched at the apex, appressed to the rootstock; flower white, very sweet scented (often as much as 5½´ in diameter when fully expanded, opening early in the morning, closing in the afternoon); petals obtuse; anthers blunt; aril much longer than the distinctly stipitate oblong seeds (these about 1½´´ long).—Ponds and still or slow-flowing water; common. June–Sept.—Varies with pinkish-tinged and rarely with bright pink-red flowers (especially at Barnstable, Mass.), the leaves often crimson underneath,—and in size by gradations into

Var. mìnor, Sims., with leaves only 2–5´ and flowers 2–3´ broad.—Shallow water, in cold bogs and in sandy soil.

2. N. renifórmis, DC. (Tuber-bearing W.) Leaves reniform-orbicular, mostly larger (8–15´ wide) and more prominently ribbed than the last, rarely purplish beneath; rootstock bearing numerous spontaneously detaching often compound tubers; flower scentless (or with a slight odor as of apples), white, never pinkish, 4½–9´ in diameter, the petals proportionally broader and blunter than in n. 1; the fruit more depressed, and with fewer but much larger (i.e. twice as broad) globular-ovoid seeds, which when mature are barely enclosed by the aril and not stipitate. (N. tuberosa, Paine.)—Lakes, slow rivers, etc., western N. Y. (from Oneida Lake, Paine) and near Meadville, Penn., to Mich., E. Neb., and probably in the Southern States. July–Sept.

5. NÙPHAR, Smith. Yellow Pond-Lily. Spatter-Dock.

Sepals 5, 6, or sometimes more, colored, or partly green outside, roundish, concave. Petals numerous, small and thickish, stamen-like or scale-like, inserted with the very numerous short stamens on the receptacle under the ovary, not surpassing the disk-like 8–24-rayed sessile stigma, persistent and at length recurved. Fruit ovoid, naked, usually ripening above water. Aril none.—Rootstock creeping, cylindrical. Leaves with a deep sinus at the base. Flowers yellow or sometimes tinged with purple, produced all summer. (Name said to be of Arabic origin.)

1. N. ádvena, Ait. f. Sepals 6, unequal; petals shorter than the stamens and resembling them, thick and fleshy, truncate; stigma nearly entire, 12–24-rayed, pale red; ovary and fruit (1½´ long) ovate, not contracted above into a narrow neck; thin submersed leaves seldom present; floating or emersed and erect leaves thick (6–12´ long), from roundish to ovate or almost oblong, the sinus open, or closed or narrow.—Very common, in still or stagnant water; stout and coarse; flower often partly purplish (var. variegàtum, Engelm.).

Var. mìnus, Morong. More slender; leaves somewhat smaller (3–8´ long); flowers usually smaller (sepals 12–15´´ long); petals spatulate; stigmas 9–13-rayed, crenately toothed, bright red or crimson; fruit 1´ long, contracted above. (N. rubrodiscum, Morong. N. luteum, Man.; not Smith.)—N. Vt. to Mich. and Penn. Probably a hybrid between this and the next species.

2. N. Kalmiànum, Ait. Very slender and with slender rootstock; submersed leaves thin, round-reniform, the floating broadly elliptical with a deep narrow sinus, 2–4´ long; sepals usually 5, the flowers an inch broad or less; petals spatulate or obovate; stigmas 7–10-rayed, dark red; fruit globular with a short neck (6–9´´ in diameter). (N. luteum, var. pumilum, Man.)—Maine to Penn. and Minn., and northward.

3. N. sagittifòlium, Pursh. Rootstock stout; leaves narrowly oblong to oblong-lanceolate with a short sinus, 6–15´ long; flowers small (1´ broad).—S. Ind. and Ill. (Schneck), and southward.

Order 7. SARRACENIÀCEÆ. (Pitcher-Plants.)

Polyandrous and hypogynous bog-plants, with hollow pitcher-form or trumpet-shaped leaves,—comprising one plant in the mountains of Guiana, another (Darlingtonia, Torr.) in California, and the following genus in the Atlantic United States.

1. SARRACÈNIA, Tourn. Side-saddle Flower.

Sepals 5, with 3 bractlets at the base, colored, persistent. Petals 5, oblong or obovate, incurved, deciduous. Stamens numerous, hypogynous. Ovary compound, 5-celled, globose, crowned with a short style, which is expanded at the summit into a very broad and petal-like, 5-angled, 5-rayed, umbrella-shaped body, the 5 delicate rays terminating under the angles in as many little hooked stigmas. Capsule with a granular surface, 5-celled, with many-seeded placentæ in the axis, loculicidally 5-valved. Seeds anatropous, with a small embryo at the base of fleshy albumen.—Perennials, yellowish-green and purplish; the hollow leaves all radical, with a wing on one side, and a rounded arching hood at the apex. Scape naked, 1-flowered; flower nodding. (Named by Tournefort in honor of Dr. Sarrasin of Quebec, who first sent our Northern species, and a botanical account of it, to Europe.)

1. S. purpùrea, L. (Side-saddle Flower. Pitcher-Plant. Huntsman's Cup.) Leaves pitcher-shaped, ascending, curved, broadly winged; the hood erect, open, round heart-shaped; flower deep purple; the fiddle-shaped petals arched over the greenish-yellow style.—Varies rarely with greenish-yellow flowers, and without purple veins in the foliage.—Peat-bogs; common from N. Eng. to Minn., N. E. Iowa, and southward east of the Alleghanies. June.—The curious leaves are usually half filled with water and drowned insects. The inner face of the hood is clothed with stiff bristles pointing downward. Flower globose, nodding on a scape a foot high; it is difficult to fancy any resemblance between its shape and a side-saddle, but it is not very unlike a pillion.

2. S. flàva, L. (Trumpets.) Leaves long (1–3°) and trumpet-shaped, erect, with an open mouth, the erect hood rounded, narrow at the base; wing almost none; flower yellow, the petals becoming long and drooping.—Bogs, Va. and southward. April.

Order 8. PAPAVERÀCEÆ. (Poppy Family.)

Herbs with milky or colored juice, regular flowers with the parts in twos or fours, fugacious sepals, polyandrous, hypogynous, the ovary 1-celled with two or more parietal placentæ.—Sepals 2, rarely 3, falling when the flower expands. Petals 4–12, spreading, imbricated and often crumpled in the bud, early deciduous. Stamens rarely as few as 16, distinct. Fruit a dry 1-celled pod (in the Poppy imperfectly many-celled, in Glaucium 2-celled). Seeds numerous, anatropous, often crested, with a minute embryo at the base of fleshy and oily albumen.—Leaves alternate, without stipules. Peduncles mostly 1-flowered. Juice narcotic or acrid.

[*] Petals 8–12, not crumpled in the bud, white. Pod 1-celled, 2-valved.

1. Sanguinaria. Petals white. Leaves and 1-flowered scape from a short rootstock.

[*][*] Petals 4, crumpled in the bud. Pod 2-valved or more.

[+] Pod 2–4-valved, the valves separating to the base from the placentas. Leaves pinnately parted. Flowers yellow.

2. Stylophorum. Pod bristly; style distinct; stigmas and placentas 3–4.

3. Chelidonium. Pod linear, smooth; style almost none; stigmas and placentas 2.

4. Glaucium. Pod rough, long-linear, 2-celled by a spongy partition; style none.

[+][+] Pod 4–20-valved, dehiscent only at the top or to the middle.

5. Papaver. Ovary incompletely many-celled; stigmas united into a radiate sessile crown.

6. Argemone. Stigmas (sessile) and placentas 4–6. Pod and leaves prickly.

1. SANGUINÀRIA, Dill. Blood-root.

Sepals 2. Petals 8–12, spatulate-oblong, the inner narrower. Stamens about 24. Style short; stigma 2-grooved. Pod oblong, turgid, 1-celled, 2-valved. Seeds with a large crest.—A low perennial, with thick prostrate premorse rootstocks, surcharged with red-orange acrid juice, sending up in earliest spring a rounded palmate-lobed leaf, and a 1-flowered naked scape. Flower white, handsome, the bud erect, the petals not crumpled. (Name from the color of the juice.)

1. S. Canadénsis, L.—Open rich woods; common. April, May.

2. STYLÓPHORUM, Nutt. Celandine Poppy.

Sepals 2, hairy. Petals 4. Style distinct, columnar; stigma 2–4-lobed. Pods bristly, 2–4-valved to the base. Seeds conspicuously crested.—Perennial low herbs, with stems naked below and oppositely 2-leaved, or sometimes 1–3-leaved, and umbellately 1–few-flowered at the summit; the flower-buds and the pods nodding. Leaves pinnately parted or divided. Juice yellow. (From στύλος, style, and φέρω, to bear, one of the distinctive characters.)

1. S. diphýllum, Nutt. Leaves pale or glaucous beneath, smoothish, deeply pinnatifid into 5 or 7 oblong sinuate-lobed divisions, and the root-leaves often with a pair of smaller and distinct leaflets; peduncles equalling the petioles; flower deep yellow (2´ broad); stigmas 3 or 4; pod oval.—Damp woods, W. Penn. to Wisc. and Tenn. May.—Foliage and flower resembling Celandine.

3. CHELIDÒNIUM, L. Celandine.

Sepals 2. Petals 4. Stamens 16–24. Style nearly none; stigma 2-lobed. Pod linear, slender, smooth, 2-valved, the valves opening from the bottom upward. Seeds crested.—Biennial herb with brittle stems, saffron-colored acrid juice, pinnately divided or 2-pinnatifid and toothed or cut leaves, and small yellow flowers in a pedunculate umbel; buds nodding. (Ancient Greek name from χελιδών, the swallow, because its flowers appear with the swallows.)

C. màjus, L. (Celandine.) Waste grounds near dwellings. May–Aug. (Adv. from Eu.)

4. GLAÙCIUM, Tourn. Horn-Poppy.

Sepals 2. Petals 4. Style none; stigma 2-lobed or 2-horned. Pod very long and linear, completely 2-celled by a spongy false partition; seeds crestless.—Annuals or biennials, with saffron-colored juice, clasping leaves, and solitary yellow flowers. (The Greek name, γλαύκιον, from the glaucous foliage.)

G. lùteum, Scop. Lower leaves pinnatifid; upper ones sinuate-lobed and toothed, cordate-clasping; pods rough (6–10´ long).—Waste places S. E. New Eng., Md., and Va.; not common. (Adv. from Eu.)

5. PAPÀVER, Tourn. Poppy.

Sepals mostly 2. Petals mostly 4. Stigmas united in a flat 4–20-rayed crown, resting on the summit of the ovary and capsule; the latter short and turgid, with 4–20 many-seeded placentæ projecting like imperfect partitions, opening by as many pores or chinks under the edge of the stigma.—Herbs with a white juice; the flower-buds nodding. (Derivation obscure.)—Three annual species of the Old World are sparingly adventive; viz.:

P. somníferum, L. (Common Poppy.) Smooth, glaucous; leaves clasping, wavy, incised and toothed; pod globose; corolla mostly white or purple.—Near dwellings in some places. (Adv. from Eu.)

P. dùbium, L. (Smooth-fruited Corn-Poppy.) Pinnatifid leaves and the long stalks bristly; pods club-shaped, smooth; corolla light scarlet.—Cult. grounds, Westchester, Penn., and southward; rare. (Adv. from Eu.)

P. Argemòne, L. (Rough-fruited C.) Smaller, with finer-cut leaves and paler flowers than the last; pods club-shaped and bristly.—Waste grounds, near Philadelphia. (Adv. from Eu.)

6. ARGEMÒNE, L. Prickly Poppy.

Sepals 2 or 3, often prickly. Petals 4–6. Style almost none; stigmas 3–6, radiate. Pod oblong, prickly, opening by 3–6 valves at the top. Seeds crested.—Annuals or biennials, with prickly bristles and yellow juice. Leaves sessile, sinuate-lobed, and with prickly teeth, often blotched with white. Flower-buds erect, short-peduncled. (Name from ἄργεμα, a disease of the eye, for which the juice of a plant so called by the Greeks was a supposed remedy.)

1. A. platýceras, Link & Otto. Setose-hispid all over; petals white, 1½–2´ long; capsule armed with stout spines.—Central Kan. and Neb., south and westward.

A. Mexicàna, L. (Mexican P.) Flowers yellow, rarely white.—Waste places, southward. July–Oct. (Adv. from trop. Amer.) (Addendum)—Argemone Mexicana. Collected at Merodosia, Ill., with white flowers, by A. B. Seymour.

Order 9. FUMARIÀCEÆ. (Fumitory Family.)

Delicate smooth herbs, with watery juice, compound dissected leaves, irregular flowers, with 4 somewhat united petals, 6 diadelphous stamens, and 2-merous pods and seeds like those of the Poppy Family.—Sepals 2, small and scale-like. Corolla flattened, closed; the 4 petals in two pairs; the outer with spreading tips, and one or both of them spurred or saccate at the base; inner pair narrower, and their callous crested tips united over the stigma. Stamens in two sets of 3 each, placed opposite the larger petals, hypogynous; their filaments often united; middle anther of each set 2-celled, the lateral ones 1-celled. Pod 1-celled, either 1-seeded and indehiscent, or several-seeded with 2 parietal placentæ and deciduous valves.—Leaves delicate, usually alternate, without stipules. Slightly bitter, innocent plants.

[*] Corolla bigibbous or 2-spurred, the 2 outer petals alike. Pod several-seeded.

1. Adlumia. Petals united into a spongy persistent subcordate corolla. Seeds crestless.

2. Dicentra. Corolla cordate or 2-spurred at base, less united. Seeds crested.

[*][*] Corolla with but one petal spurred at base, deciduous.

3. Corydalis. Pod with few to many crested or arilled seeds.

4. Fumaria. Fruit a globular 1-seeded nutlet. Seed crestless.

1. ADLÙMIA, Raf. Climbing Fumitory.

Petals all permanently united in a cordate-ovate corolla, becoming spongy-cellular and persistent, enclosing the small, few-seeded pod. Seeds not crested. Stigma 2-crested. Filaments monadelphous below in a tube which is adherent to the corolla, diadelphous at the summit.—A climbing biennial, with thrice-pinnate leaves, cut-lobed delicate leaflets, and ample panicles of drooping white or purplish flowers. (Dedicated by Rafinesque to Major Adlum.)

1. A. cirrhòsa, Raf.—Wet woods; N. Eng. to Mich., E. Kan., and southward. June–Oct.—A handsome vine, with delicate foliage, climbing by the slender young leaf-stalks over high bushes; often cultivated.

2. DICÉNTRA, Borkh. Dutchman's Breeches.

Petals slightly cohering into a heart-shaped or 2-spurred corolla, either deciduous or withering-persistent. Stigma 2-crested and sometimes 2-horned. Filaments slightly united in two sets. Pod 10–20-seeded. Seeds crested.—Low, stemless perennials (as to our wild species) with ternately compound and dissected leaves, and racemose nodding flowers. Pedicels 2-bracted. (Name from δίς, twice, and κέντρον, a spur;—accidentally printed Diclýtra in the first instance, which by an erroneous conjecture was afterwards changed into Diélytra.)

[*] Raceme simple, few-flowered.

1. D. Cucullària, DC. (Dutchman's Breeches.) Scape and slender-petioled leaves from a sort of granulate bulb; lobes of leaves linear; corolla with 2 divergent spurs longer than the pedicel; crest of the inner petals minute.—Rich woods, especially westward.—A very delicate plant, sending up in early spring, from the cluster of grain-like tubers crowded together in the form of a scaly bulb, the finely cut leaves and the slender scape, bearing 4–10 pretty, but odd, white flowers tipped with cream-color.

2. D. Canadénsis, DC. (Squirrel Corn.) Subterranean shoots bearing scattered grain-like tubers (resembling peas or grains of Indian corn, yellow); leaves as in n. 1; corolla merely heart-shaped, the spurs very short and rounded; crest of the inner petals conspicuous, projecting.—Rich woods, especially northward. April, May.—Flowers greenish-white tinged with rose, with the fragrance of Hyacinths.

[*][*] Racemes compound, clustered.

3. D. exímia, DC. Subterranean shoots scaly; divisions and lobes of the leaves broadly oblong; corolla oblong, 2-saccate at the base; crest of the inner petals projecting.—Rocks, western N. Y., rare, and Alleghanies of Va. May–Aug.—Coarser-leaved than the others; scapes 6–10´ high.

3. CORÝDALIS, Vent.

Corolla 1-spurred at the base (on the upper side), deciduous. Style persistent. Pod many-seeded. Seeds crested or arilled. Flowers in racemes. Our species are biennial, leafy-stemmed, and pale or glaucous. (The ancient Greek name for the crested lark.)

[*] Stem strict; flowers purplish or rose-color with yellow tips.

1. C. glaùca, Pursh. (Pale Corydalis.) Racemes panicled; spur of the corolla very short and rounded; pods erect, slender, elongated.—Rocky places; common; 6´–2° high. May–Aug.

[*][*] Low, ascending; flowers yellow.

[+] Outer petals wing-crested on the back.

2. C. flávula, DC. Pedicels slender, conspicuously bracted; corolla pale yellow, 3–4´´ long, spur very short; tips of the outer petals pointed, longer than the inner; crest 3–4-toothed; pods torulose, pendulous or spreading; seeds acutely margined, rugose-reticulated; aril loose.—Penn. to Minn., and southward.

3. C. micrántha, Gray. Pedicels short and bracts small; corolla pale yellow, 4´´ long, with short spur and entire crest, or flowers often cleistogamous and much smaller, without spur or crest; pods ascending, torulose; seeds obtuse-margined, smooth and shining.—N. Car., Mo., Minn., and southward.

4. C. crystállina, Engelm. Pedicels short, erect; corolla bright yellow, 8´´ long, the spur nearly as long as the body; crest very broad, usually toothed; pods terete, erect, densely covered with transparent vesicles, seeds acutely margined, tuberculate.—S. W. Mo. and southward.

[+][+] Outer petals merely carinate on the back, not crested.

5. C. aùrea, Willd. (Golden C.) Corolla golden-yellow, ½´ long, the slightly decurved spur about half as long, shorter than the pedicel; pods spreading or pendulous, becoming torulose; seeds obtuse-margined.—Rocky banks, Vt. to Penn., Mo., Minn., and westward.

Var. occidentàlis, Engelm. Flowers rather larger, the spur nearly as long as the body; pods less torulose, on short pedicels; seeds acutish on the margin.—Neb. and Kan. to W. Tex. and westward.

4. FUMÀRIA, Tourn. Fumitory.

Corolla 1-spurred at the base. Style deciduous. Fruit indehiscent, small, globular, 1-seeded. Seeds crestless.—Branched and leafy-stemmed annuals, with finely dissected compound leaves, and small flowers in dense racemes or spikes. (Name from fumus, smoke.)

F. officinàlis, L. (Common Fumitory.) Sepals ovate-lanceolate, acute, sharply toothed, narrower and shorter than the corolla (which is flesh-color tipped with crimson); fruit slightly notched.—Waste places, about dwellings. (Adv. from Eu.)

Order 10. CRUCÍFERÆ. (Mustard Family.)

Herbs, with a pungent watery juice and cruciform tetradynamous flowers; fruit a silique or silicle.—Sepals 4, deciduous. Petals 4, hypogynous, regular, placed opposite each other in pairs, their spreading limbs forming a cross. Stamens 6, two of them inserted lower down and shorter (rarely only 4 or 2). Pod usually 2-celled by a thin partition stretched between the two marginal placentæ, from which when ripe the valves separate, either much longer than broad (a silique), or short (a silicle), sometimes indehiscent and nut-like (nucumentaceous), or separating across into 1-seeded joints (lomentaceous). Seeds campylotropous, without albumen, filled by the large embryo, which is curved or folded in various ways: i.e. the cotyledons accumbent, viz., their margins on one side applied to the radicle, so that the cross-section of the seed appears thus o==; or else incumbent, viz., the back of one cotyledon applied to the radicle, thus o||. In these cases the cotyledons are plane; but they may be folded upon themselves and round the radicle, as in Mustard, where they are conduplicate, thus o>>. In Leavenworthia alone the whole embryo is straight.—Leaves alternate, no stipules. Flowers in terminal racemes or corymbs; pedicels rarely bracted.—A large and very natural family, of pungent or acrid, but not poisonous plants. (The characters of the genera are taken almost wholly from the pods and seeds; the flowers being nearly alike in all.)

SERIES I. Pod 2-celled, regularly dehiscent by 2 valves.

[*] Pod compressed parallel to the broad partition. Seeds flat or flattish, orbicular or oval; cotyledons accumbent or nearly so.

[+] Pod large, oblong-elliptical, valves nerveless. Seeds in 2 rows. Flowers yellow.

1. Selenia. Leaves pinnatisect. Raceme leafy-bracteate. Seeds winged.

[+][+] Pod linear; valves nerveless. Seeds in one row. Flowers yellow only in n. 3.

2. Leavenworthia. Seed winged; embryo straight or nearly so. Annual; stem often scapose, 1–few-flowered.

3. Dentaria. Stem naked below, 2–3-leaved. Pod coriaceous, with thick placentas, long-styled. Seeds wingless; cotyledons thick, very unequal.

4. Cardamine. Stem leafy. Pod coriaceous, with thick placentas. Seeds wingless; cotyledons flattened, equal.

[+][+][+] Pod linear, or oblong, or orbicular; valves 1-nerved or nerveless. Seeds in 2 rows (except in species of n. 4).

5. Arabis. Pod long-linear, the flat or flattish valves more or less 1-nerved. Seeds winged or wingless. Flowers white to purple. Stems leafy, at least below.

6. Draba. Pod oval to narrowly oblong or lanceolate; valves flat or flattish, faintly nerved or veined. Seeds wingless, numerous.

7. Alyssum. Pod orbicular; valves veinless, somewhat convex with flattened margin. Seeds wingless, 2–4.

[*][*] Pod terete or turgid, or 4-angled by the prominent midnerves. Seeds wingless, more or less turgid.

[+] Pods short. (See also n. 10.)

8. Lesquerella. Pod globular-inflated, about 4-seeded; valves nerveless. Cotyledons accumbent. Flowers yellow.

9. Camelina. Pod obovoid, many-seeded; valves 1-nerved; style slender. Cotyledons incumbent. Flowers yellow.

10. Subularia. Pod ovoid or globular, few-seeded, valves 1-nerved; style none. Cotyledons long, folded transversely. Flowers white. Dwarf stemless aquatic.

[+][+] Pod linear (or oblong or even globular in n. 10).

[++] Cotyledons accumbent.

11. Nasturtium. Pod often short; valves strongly convex, nerveless. Seeds small, in 2 rows in each cell. Flowers yellow or white.

12. Barbarea. Pod somewhat 4-sided; valves strongly 1-nerved. Seeds in 1 row. Flowers yellow.

[++][++] Cotyledons incumbent or partially so.

13. Hesperis. Pod terete, elongated; stigma-lobes narrow, erect. Flowers large, purple.

14. Erysimum. Pod 4-sided; valves strongly 1-nerved; stigma broadly 2-lobed. Pubescence of appressed 2–3-parted hairs. Flowers yellow.

15. Sisymbrium. Pod angled or teretish; valves 1–3-nerved; stigma small. Flowers yellow or white, small.

16. Thelypodium. Pod teretish; valves 1-nerved; stigma entire. Cotyledons obliquely incumbent. Flowers rose-color. Leaves auricled.

[++][++][++] Cotyledons conduplicate.

17. Brassica. Pod beaked or pointed beyond the end of the valves, or tipped with a rigid style, nearly terete, or 4-sided. Flowers yellow or whitish.

[*][*][*] Pod short; the boat-shaped valves conduplicate or much flattened contrary to the narrow partition. Flowers white.

18. Capsella. Pod many-seeded, obcordate-triangular, wingless. Cotyledons incumbent.

19. Thlaspi. Pod several-seeded, obovate or obcordate, winged. Cotyledons accumbent.

20. Lepidium. Pod 2-seeded, flat, scale-shaped. Cotyledons incumbent or accumbent.

21. Senebiera. Pod 2-seeded, didymous; the valves rugose, separating at maturity from the little partition as 2 closed 1-seeded nutlets. Cotyledons incumbent, narrow.

SERIES II. Pods indehiscent, continuous or transversely jointed; joints 1-celled.

22. Cakile. Pod short, 2-jointed; joints 1-seeded. Cotyledons plane, accumbent.

23. Raphanus. Pod elongated, several-seeded, continuous, or constricted between the seeds and moniliform. Cotyledons conduplicate.

1. SELÈNIA, Nutt.

Pod large, oblong-elliptical, flat; the valves nerveless. Seeds in 2 rows in each cell, rounded, broadly winged; cotyledons accumbent; radicle short.—A low annual, with once or twice pinnatifid leaves and leafy-bracteate racemes of yellow flowers. (Name from σελήνη, the moon, with allusion to Lunaria, which it somewhat resembles in its pods.)

1. S. aùrea, Nutt. Lobes of the simply pinnatifid leaves entire or toothed; pod ½´ long, on elongated spreading pedicels, beaked by the long slender style.—Mo. and Kan. to Tex.

2. LEAVENWÓRTHIA, Torr.

Pod broadly linear or oblong, flat; the valves nerveless, but minutely reticulate-veined. Seeds in a single row in each cell, flat, surrounded by a thick wing. Embryo straight! or the short radicle only slightly bent in the direction which if continued would make the orbicular cotyledons accumbent.—Little winter annuals, glabrous and often stemless, with lyrate leaves and short 1–few-flowered scape-like peduncles. (Named in honor of the late M. C. Leavenworth.)

1. L. Michaùxii, Torr. Scapes 2–6´ high; leaf-lobes usually numerous (7–15); petals purplish or nearly white with a yellowish base, obtuse; pods not torulose, oblong to linear (6–15´´ long); style short.—S. Ind to Tenn. and Mo.

2. L. torulòsa, Gray. Similar, but pods torulose even when young, linear; style 1–2´´ long; seeds acutely margined rather than winged; petals emarginate.—Barrens of Ky. and Tenn.

3. DENTÀRIA, Tourn. Toothwort. Pepper-root.

Pod lanceolate, flat, as in Cardamine. Style elongated. Seeds in one row, wingless, the stalks broad and flat. Cotyledons petioled, thick and very unequal, their margins somewhat infolding each other.—Perennials, of damp woodlands, with long, horizontal, fleshy, sometimes interrupted, scaly or toothed rootstocks, of a pleasant pungent taste; the simple stems leafless below, bearing 2 or 3 petioled compound leaves about or above the middle, and terminated by a single corymb or short raceme of large white or purple flowers. Flowers larger, pods broader, and seeds larger than is usual in Cardamine. (Name from dens, a tooth.)

[*] Rootstock elongated; leaves 3-foliolate.

1. D. diphýlla, L. Rootstock long and continuous, often branched, toothed; stem-leaves 2, similar to the radical ones, close together; leaflets rhombic-ovate or oblong-ovate, shortly petiolate, coarsely crenate, the teeth abruptly acute; petals white.—Rich woods, Maine to Minn. and Ky. May.—Rootstocks 5–10´ long, crisp, tasting like Water-Cress.

[*][*] Rootstock tuberous, more or less moniliform; leaves 3-foliolate or 3-parted.

2. D. laciniàta, Muhl. Tubers deep-seated, usually not jointed nor prominently tubercled; root-leaves often none; stem-leaves 3-parted, the lateral segments often 2-lobed, all broadly oblong to linear, more or less gash-toothed; flowers white or rose-color.—N. Eng. to Minn., Kan., and southward. April, May.—Var. multífida, a slender form with the narrowly linear segments usually more or less divided into linear lobes. (D. multifida, Muhl.) Southward, scarcely if at all within our limits.

3. D. heterophýlla, Nutt. Tubers near the surface, jointed, narrowly oblong or thick-clavate, prominently tubercled; leaves 3-foliolate, the leaflets distinctly petiolate, oblong-lanceolate to linear, entire to rather deeply crenate, rarely laciniate or lobed; root-leaves with ovate or lanceolate and usually lobed leaflets.—Penn. to Ky. and southward. Blooming a little later than the last.

4. D. máxima, Nutt. Tubers jointed, strongly tubercled; stem-leaves usually alternate, 3-foliolate; leaflets ovate or oblong-ovate, coarsely toothed and somewhat cleft or lobed.—Vt. to western N. Y. and Penn. May.

4. CARDAMÌNE, Tourn. Bitter Cress.

Pod linear, flattened, usually opening elastically from the base; the valves nerveless and veinless, or nearly so; placentas and partition thick. Seeds in a single row in each cell, wingless; their stalks slender. Cotyledons accumbent, flattened, equal or nearly so, petiolate.—Mostly glabrous perennials, leafy-stemmed, growing along watercourses and in wet places. Flowers white or purple. (A Greek name, in Dioscorides, for some cress, from its cordial or cardiacal qualities.)

[*] Root perennial; leaves simple.

1. C. rhomboídea, DC. (Spring Cress.) Stems upright from a tuberous base and slender rootstock bearing small tubers, simple; root-leaves round and often heart-shaped; lower stem-leaves ovate or rhombic-oblong, somewhat petioled, the upper almost lanceolate, sessile, all often sparingly toothed; pods linear-lanceolate, pointed with a slender style tipped with a conspicuous stigma; seeds round-oval.—Wet meadows and springs; common. April–June.—Flowers large, white.

Var. purpùrea, Torr. Lower (4–6´ high), and usually slightly pubescent; flowers rose-purple, appearing earlier.—Along streams in rich soil. Western N. Y. to Md. and Wisc.

2. C. rotundifòlia, Michx. (Mountain Water-Cress.) Stems branching, weak or decumbent, making long runners; root fibrous; leaves all much alike, roundish, somewhat angled, often heart-shaped at the base, petioled; pods small, linear-awl-shaped, pointed with the slender style; stigma minute; seeds oval-oblong.—Cool shaded springs, N. J. (Middletown, Willis) to Ky., and southward along the mountains. May, June.—Flowers white, smaller than in n. 1.

3. C. bellidifòlia, L. Dwarf (2–3´ high), alpine, tufted; leaves ovate, entire, or sometimes with a blunt lateral tooth (4´´ long), on long petioles; pods 1´ long, upright, linear; style nearly none, stout.—Summits of the White Mountains and Katahdin, Maine. July.—Flowers 1–5, white. (Eu.)

[*][*] Root perennial; leaves pinnate; flowers showy.

4. C. praténsis, L. (Cuckoo Flower.) Stem ascending from a short rootstock, simple; leaflets 7–13, those of the lower leaves rounded and stalked, of the upper oblong or linear, entire, or slightly angled-toothed; petals (white or rose-color) thrice the length of the calyx; pod 9–15´´ long, 1´´ broad; style short.—Wet places and bogs, Vt. to N. J., Wisc., and northward; rare. May. (Eu.)

[*][*][*] Root mostly biennial or annual; leaves pinnate; flowers small, white.

5. C. hirsùta, L. (Small Bitter Cress.) Glabrous or beset with scattered hairs; stems (3´–2° high) erect or ascending from the spreading cluster of root-leaves; their leaflets rounded, those of the upper leaves oblong or linear and often confluent, all either toothed, angled, or entire; pods linear, very narrow, erect or ascending; style variable.—Wet places; common. May–July. The ordinary form corresponds closely to the European var. sylvática, Gaud. The typical imperfectly developed annual form, with only 4 stamens and rather strict pods, occurs very rarely. A form answering to C. parviflora of Europe, with mostly linear leaflets and pods often erect on spreading pedicels, is occasionally found in drier localities. (Eu., Asia.)

5. ÁRABIS, L. Rock Cress.

Pod linear, flattened; placentas not thickened; the valves plane or convex, more or less 1-nerved in the middle, or longitudinally veiny. Seeds usually margined or winged. Cotyledons accumbent or a little oblique.—Leaves seldom divided. Flowers white or purple. (Name from the country, Arabia. See Linn. Phil. Bot. § 235.)

§ 1. ARABIS proper. Seeds in one row in each cell, orbicular or nearly so, more or less wing-margined; cotyledons strictly accumbent.

[*] Low, chiefly biennials, diffuse or spreading from the base.

1. A. Ludoviciàna, Meyer. Nearly glabrous, often annual; leaves all pinnately parted into oblong or linear few-toothed or entire divisions, those of the lower leaves numerous; pedicels very short; flowers small, white; pods rather broadly linear, spreading, flat; seeds winged.—Open grounds, Va. to Mo., and southward.

[*][*] Erect and simple leafy-stemmed biennials, with simple leaves, white or whitish flowers, narrow but flattened ascending or erect pods, and nearly wingless seeds.

2. A. pàtens, Sulliv. Downy with spreading hairs, erect (1–2° high); stem-leaves oblong-ovate, acutish, coarsely toothed or the uppermost entire, partly clasping by the heart-shaped base; petals (bright white, 4´´ long) twice the length of the calyx; pedicels slender, spreading; pods spreading or ascending, tipped with a distinct style.—Penn. to central Ohio and southward; Minn. April, May.

3. A. hirsùta, Scop. Rough-hairy, sometimes smoothish, strictly erect (1–2° high); stem-leaves oblong or lanceolate, entire or toothed, partly clasping by a somewhat arrow-shaped or heart-shaped base; petals (greenish-white) small, but longer than the calyx; pedicels and pods strictly upright; style scarcely any; immature seeds somewhat 2-rowed.—Rocks, common, especially northward. May, June. (Eu.)

[*][*][*] Erect and simple leafy-stemmed biennials (1–3° high), with small whitish flowers, recurved-spreading or pendulous flat pods (3–4´ long), and broadly winged seeds, their stalks adherent to the partition; root-leaves rarely lyrate.

4. A. lævigàta, Poir. Smooth and glaucous, upright; stem-leaves partly clasping by the arrow-shaped base, lanceolate or linear, sparingly cut-toothed or entire; petals scarcely longer than the calyx; pods long and narrow, recurved-spreading on ascending or merely spreading pedicels.—Rocky places, Maine to Minn. and southward. May.

5. A. Canadénsis, L. (Sickle-pod.) Stem upright, smooth above; stem-leaves pubescent, pointed at both ends, oblong-lanceolate, sessile, the lower toothed; petals twice the length of the calyx, oblong-linear; pods very flat, scythe-shaped, hanging on rough-hairy pedicels (2´´ wide).—Woods and ravines; not rare, especially westward. June–Aug.

§ 2. TURRÌTIS. Seeds not so broad as the partition, in two more or less distinct rows in each cell, at least when young; strict and very leafy-stemmed biennials; cauline leaves partly clasping by a sagittate base. (Our species very glabrous, except the mostly hirsute base of the stem and the lower leaves.)

6. A. perfoliàta, Lam. (Tower Mustard.) Tall (2–4° high), glaucous; stem-leaves oblong or ovate-lanceolate, entire; petals yellowish-white, little longer than the calyx; pods very narrow (3´ long) and pedicels strictly erect; seeds marginless; cotyledons often oblique.—Rocks and fields, N. Eng. to Minn. (rare), north and westward. (Eu.)

7. A. confìnis, Watson. Scarcely glaucous, 1–3° high; pubescence below finely stellate; stem-leaves lanceolate or oblong-linear, entire (1–2´ long), with narrow auricles, or the lowest spatulate and toothed; petals white or rose-color, fully twice the length of the calyx; pedicels and flat pods loosely erect, or ascending, or even spreading; seeds wing-margined, when mature little narrower than the partition. (A. Drummondii, Man.)—From the lower St. Lawrence to Minn., south to Conn., N. Y., and Ill.—Pods 2½–3½´ long, or in a var. (T. brachycarpa, Torr. & Gray) only 1–2´ long.

§ 3. PSEUDÁRABIS. Seeds oblong or elliptical, very small, wingless, in one row; cotyledons often more or less oblique. Biennial or perennial, branching from the base.

8. A. lyràta, L. Mostly glabrous, except the lyrate-pinnatifid root-leaves; stem-leaves scattered, spatulate or linear with a tapering base, sparingly toothed or entire; petals white, much longer than the yellowish calyx; pods long and slender, flat, ascending or spreading.—On rocks or sandy shores, New Eng. to Ky. along the mountains, Minn., and northward. April–July.—Usually biennial, but southward in the mountains decidedly perennial.

9. A. dentàta, Torr. & Gray. Roughish pubescent, slender (1–2° high); leaves oblong, very obtuse, unequally and sharply toothed; those of the stem numerous, half-clasping and eared at the base, of the root broader and tapering into a short petiole; petals (whitish) scarcely exceeding the calyx; pods widely spreading, very slender, short-stalked; style scarcely any.—N. Y. to Mich., Minn., and southward. May, June.

6. DRÀBA, Dill. Whitlow-Grass.

Pod oval, oblong, or even linear, flat; the valves plane or slightly convex; the partition broad. Seeds several or numerous, in 2 rows in each cell, marginless. Cotyledons accumbent. Filaments not toothed.—Low herbs with entire or toothed leaves, and white or yellow flowers; pubescence often stellate. (Name from δράβη, applied by Dioscorides to some cress; meaning unknown.)

§ 1. DRABÆ̀A. Petals not notched or cleft; perennial or biennial, leafy-stemmed, flowers white, pods twisted when ripe.

1. D. ramosíssima, Desv. Diffusely much branched and forming many radical tufts, perennial (5–8´ high), pubescent; leaves laciniate-toothed, linear-lanceolate, the lower oblanceolate, racemes corymbosely-branched; pods hairy, oval-oblong or lanceolate (2–5´´ long), on slender spreading pedicels, tipped with a long style.—Cliffs, Harper's Ferry, Natural Bridge, etc., Va., to Kentucky River, and southward. April, May.

2. D. incàna, L. Hoary-pubescent, biennial or somewhat perennial, the radical tuft seldom branching; leaves oblanceolate or the cauline lanceolate to ovate, few-toothed or entire; pods oblong to lanceolate, usually acute and straight, often pubescent, on short erect pedicels; style very short or none.—Dry rocks, Willoughby Mountain, Vt.; also northward and far westward. (Eu.)

Var. arábisans, Watson. Caudex much branched; pod glabrous, acuminate or acute, twisted, beaked with a longer distinct style. (D. arabisans, Michx.)—N. Vt. to western N. Y. and the shores of the upper lakes.

§ 2. DRABÉLLA. Winter annuals; leafy stems short; flowers white (yellow in n. 5); style none. (Leaves oblong or obovate, hairy, sessile.)

3. D. Caroliniàna, Walt. Small (1–5´ high); leaves obovate, entire; peduncles scape-like; petals usually twice the length of the calyx; raceme short or corymbose in fruit (½–1´ long); pods broadly linear, smooth, much longer than the ascending pedicels.—Sandy and waste fields, E. Mass. to Minn., and southward. March–May.—Petals often wanting in the later racemes, especially in the var. micrántha, Gray, with minutely rough-hairy pods, which is found with the other, westward.

4. D. cuneifòlia, Nutt. Leaves obovate, wedge-shaped, or the lowest spatulate, toothed; raceme somewhat elongated in fruit (1–3´), at length equalling the naked peduncle; petals emarginate, much longer than the calyx; pods oblong-linear, minutely hairy, longer than the horizontal pedicels.—Grassy places, Ill. to E. Kan., and southward. March, April.

5. D. brachycárpa, Nutt. Low (2–4´ high), minutely pubescent; stems leafy to the base of the dense at length elongated raceme; leaves narrowly oblong or the lowest ovate (2–4´´ long), few toothed or entire; flowers small; pods smooth, narrowly oblong, acutish (2´´ long), about the length of the ascending or spreading pedicels.—Dry hills, Ill., Ky., Va. (A. H. Curtiss), and southward. April.—Petals sometimes minute, sometimes none.

6. D. nemoròsa, L. Leaves oblong or somewhat lanceolate, more or less toothed; racemes elongated (4–8´ long in fruit); petals emarginate, small; pods elliptical-oblong, half the length of the horizontal or widely-spreading pedicels, pubescent or smooth.—Fort Gratiot, Mich., N. Minn., and westward. (Eu.)

§ 3. ERÓPHILA. Petals 2-cleft. (Annual or biennial; flowers white.)

D. vérna, L. (Whitlow-Grass.) Small (scapes 1–3´ high); leaves all radical, oblong or lanceolate; racemes elongated in fruit; pods varying from round-oval to oblong-lanceolate, smooth, shorter than the pedicels.—Sandy waste places and roadsides. April, May. (Nat. from Eu.)

7. ALÝSSUM, Tourn.

Pod small, orbicular, with only one or two wingless seeds in a cell; valves nerveless, somewhat convex, the margin flattened. Flowers yellow or white. Filaments often toothed. Cotyledons accumbent. (Greek name of a plant reputed to check the hiccup, as the etymology denotes.)

A. marítimum, L. (Sweet Alyssum), with green or slightly hoary linear leaves, honey-scented small white flowers, and 2-seeded pods, commonly cult., begins to be spontaneous southward. (Adv. from Eu.)

A. calycìnum, L., a dwarf hoary annual, with linear-spatulate leaves, pale yellow or whitish petals little exceeding the persistent calyx, and orbicular sharp margined 4-seeded pod, the style minute, occurs occasionally in grassland. (Adv. from Eu.)

8. LESQUERÉLLA, Watson.

Pod mostly globular or inflated, with a broad orbicular to ovate hyaline partition nerved to the middle, the hemispherical or convex thin valves nerveless. Seeds few or several, in 2 rows, flat. Cotyledons accumbent. Filaments toothless.—Low herbs, hoary with stellate hairs or lepidote. Flowers mostly yellow. (Named for Leo Lesquereux.)

1. L. globòsa, Watson. Minutely hoary all over; stems spreading or decumbent from an annual or biennial root; leaves oblong or lanceolate with a tapering base, repand-toothed or nearly entire; raceme at length elongated, with filiform diverging pedicels; petals light yellow; style filiform, much longer than the small globose, acutish, about 4-seeded pod; seeds marginless. (Vesicaria Shortii, Torr.)—Rocky banks, Ky. to Tenn. and Mo. May, June.

2. L. grácilis, Watson. Annual, slender; pubescence very fine; leaves narrowly oblanceolate; pods glabrous, suberect on ascending or curved pedicels, stipitate; style long. (Vesicaria gracilis, Hook.)—S. Kan. to Tex.

3. L. Ludoviciàna, Watson. Biennial or perennial; pubescence compact; leaves linear-oblanceolate, mostly entire; pods pubescent, pendulous on recurved pedicels; style long. (Vesicaria Ludoviciana, DC.)—Minn. to Neb. and southwestward.

9. CAMÉLINA, Crantz. False Flax.

Pod obovoid or pear-shaped, pointed, flattish parallel to the broad partition; valves 1-nerved. Seeds numerous, oblong. Cotyledons incumbent. Style slender. Flowers small, yellow. (Name from χαμαί, dwarf, and λίνον, flax.)

C. satìva, Crantz. Annual; leaves lanceolate and arrow-shaped; pods margined, large. A weed in flax-fields, etc. (Adv. from Eu.)

10. SUBULÀRIA, L. Awlwort.

Pod ovoid or globular, with a broad partition; the turgid valves 1-nerved. Seeds several. Cotyledons long and narrow, incumbently folded transversely, i.e., the cleft extending to the radicular side of the curvature. Style none.—A dwarf stemless perennial, aquatic; the tufted leaves awl-shaped (whence the name). Scape naked, few-flowered, 1–3´ high. Flowers minute, white.

1. S. aquática, L. Margin of lakes in Maine; Echo Lake, Franconia, N. H.; also in alpine regions of the western mountains. June, July. (Eu.)

11. NASTÚRTIUM, R. Br. Water-Cress.

Pod a short silique or a silicle, varying from oblong-linear to globular, terete or nearly so; valves strongly convex, nerveless. Seeds usually numerous, small, turgid, marginless, in 2 irregular rows in each cell (except in N. sylvestre). Cotyledons accumbent.—Aquatic or marsh plants, with yellow or white flowers, and commonly pinnate or pinnatifid leaves, usually glabrous. (Name from Nasus tortus, a convulsed nose, alluding to the effect of its pungent qualities.)

§ 1. Petals white, twice the length of the calyx; pods linear; leaves pinnate.

N. officinàle, R. Br. (True Water-Cress.) Perennial; stems spreading and rooting; leaflets 3–11, roundish or oblong, nearly entire; pods (6–8´´ long) ascending on slender widely spreading pedicels.—Brooks and ditches; escaped from cultivation. (Nat. from Eu.)

§ 2. Petals yellow or yellowish, seldom much exceeding the calyx; pods linear, oblong, or even ovoid or globular; leaves mostly pinnatifid.

[*] Perennial from creeping or subterranean shoots; flowers rather large, yellow.

N. sylvéstre, R. Br. (Yellow Cress.) Stems ascending; leaves pinnately parted, the divisions toothed or cut, lanceolate or linear; pods (½´ long) on slender pedicels, linear and narrow, bringing the seeds into one row; style very short.—Wet meadows, Mass. to Va.; rare. (Nat. from Eu.)

1. N. sinuàtum, Nutt. Stems low, diffuse; leaves pinnately cleft, the short lobes nearly entire, linear-oblong; pods linear-oblong (4–6´´ long), on slender pedicels; style slender.—Banks of the Mississippi and westward. June.

[*][*] Annual or biennial, rarely perennial (?), with simple fibrous roots; flowers small or minute, greenish or yellowish; leaves somewhat lyrate.

2. N. sessiliflòrum, Nutt. Stems erect, rather simple; leaves obtusely incised or toothed, obovate or oblong; flowers minute, nearly sessile; pods elongated-oblong (5–6´´ long), thick; style very short.—W. Ill. to E. Kan., Tenn., and southward. April–June.