Note 34 — JOURNAL OF A NATURALIST. (continued 2)
Reading edition
Without close examination, this plant appears to be a uredo; but it is in fact a sphæria. Uredo differs from sphæria chiefly in the vessels not containing the capsules in cells, but loose. Hoffman observes, that both sphæria and uredo discharge pollen from an orifice; but, if the summit of this plant be cut off, the capsules are obvious.