Uredo Circææ, A. & S. Nightshade Uredo; sori minute, crowded, subrotund, slightly confluent, on the under surface; spores irregular, ovate, small, ochraceous.—On leaves of Circæa lutetiana. June, July. Common. ([Plate VII.] figs. 135, 136.)
Uredo bifrons, Grev. Twin-faced Uredo. On both surfaces of the leaves, often opposite, scattered, round, light brown, girt with the remains of the epidermis; spores globose.—On Sorrel leaves (Rumex acetosa and R. acetosella). July, September. Common. ([Plate VII.] figs. 137-139)
Lecythea, Lév.
Stroma surrounded or sprinkled with elongated abortive spores. Spores free, invested with their mother-cell, or concatenate.—Berk. Outl., p. 334.
* Spores free.
Lecythea Ruborum, Lév. Bramble Rust. Spots pale, brown or purple on the opposite side, sometimes depressed above; sori subrotund, aggregate; epidermis soon bursting; spores globose or subglobose, echinulate, bright ochraceous-yellow.—On the under surface of Bramble leaves. July and August. Very common. ([Plate II.] fig. 40.)
Lecythea Rosæ, Lév. Rose Rust; spots yellow, small, scattered; spores sub-oval, sometimes minutely pedicellate, orange.—On Rose-leaves. July, September. Extremely common. ([Plate II.] fig. 37.)
Lecythea Poterii, Lév. Burnet Rust; spots obliterated, rufous on the opposite side; sori subrotund, scattered, minute on the under surface; epidermis bursting; spores subglobose, often pedicellate, intense orange; barren spores pale, cylindrical, and slightly curved.—On Poterium Sanguisorba. Summer. Common. ([Plate III.] fig. 31.)
Lecythea Populina, Lév. Poplar Rust; hypogenous; sori yellow, roundish or oblong, surrounded by the ruptured epidermis; spores copious, elongated or ovate.—On Poplar and Birch leaves. Summer. Common.
Lecythea Euphorbiæ, Lév. Spurge Rust; spots obliterated; sori subrotund, small, scattered, surrounded by the ruptured epidermis; barren spores pyriform or subglobose, pedicellate; fertile spores subglobose, orange.—On the under surface of the leaves of various species of Euphorbia, especially E. helioscopia and E. peplus. August. Very common.