Note 1570 — I.—PHÆNOGAMOUS OR FLOWERING PLANTS. (continued 13)
Reading edition
The botanical distinctions between the two species may be stated thus:—
C. procera, corolla cup-shaped, petals somewhat erect, flower-buds spherical, appendages of corona with a blunt upward point. See Fig. in Bentley and Trimen, Med. Plants, part 25 (1877).
C. gigantea, corolla opening flat, flower-buds bluntly conical or oblong, appendages of corona rounded.