=Lecythea Baryi=, Berk. DE BARY’S RUST; sori few; cystidia with an abrupt globose head; spores subglobose.—On leaves of _Brachypodium pennatum_. Very rare. =Lecythea Valerianæ=, Berk. VALERIAN RUST; spots yellowish; sori subrotund, small, confluent, sometimes circinating; epidermis at length bursting; spores reddish-brown, subglobose or clavate, shortly pedicellate.—On _Valeriana officinalis_. August. * * _Spores invested._ =Lecythea gyrosa=, Berk. RINGED RUST; spots obliterated; sori minute, confluent, and forming a small distinct ring; epidermis bursting; spores globose and elongato-pyriform, yellow or pale.—On the upper surface of Raspberry and Bramble leaves, forming a more or less perfect ring with the centre unoccupied. September. (Plate VIII. figs. 162-164.) * * * _Spores concatenate._ =Lecythea Capræarum=, Berk. SALLOW RUST; spots obliterated, yellow on the opposite side; sori varied in form, here and there confluent, surrounded by the ruptured epidermis; barren spores subglobose and pyriform, pedicellate; fertile spores subglobose, dirty yellow.—On the under surface of the leaves of Sallows. June to August. Very common. (Plate VIII. figs. 160, 161.) =Lecythea Lini=, Berk. FLAX RUST; spots yellowish; sori subrotund, scattered, surrounded by the ruptured epidermis; spores globose or pyriform, sometimes pedicellate.—On _Linum catharticum_. July. Not uncommon. (Plate VIII. figs. 165-167.) TRICHOBASIS, _Lév._ _Spores_ free; attached at first to a short peduncle, which at length falls away.—_Berk. Outl._, pp. 332. * _Spores yellow._ =Trichobasis rubigo-vera=, Lév. ROUND CORN RUST; spots yellow, heaps oval, scattered, generally on the upper surface; epidermis at length bursting longitudinally; spores subglobose, reddish-brown, easily dispersed.—On Grasses and Corn. Throughout the Summer. Very common. (Plate VII. figs. 140-142.) =Trichobasis linearis=, Lév. LONG CORN RUST; spots yellow-brown. Sori elliptic, then elongated and linear; epidermis bursting; spores oblong or globose, yellow.—On leaves and sheaths of Corn and Grasses. Summer. Common. Plate VII. figs. 143, 144.) =Trichobasis Glumarum=, Lév. GLUME RUST; sori minute, round, scarcely convex, subgregarious, often confluent. Spores globose or subovoid, orange, not pedicellate; epispore smooth.—On the glumes of Cereals. August. =Trichobasis Symphyti=, Lév. COMFREY RUST; Sori minute, very numerous, scattered, roundish, then confluent; epidermis ruptured, scarcely conspicuous around the margin; spores subglobose, pallid orange.—On Comfrey. =Trichobasis Pyrolæ=, B. WINTERGREEN RUST; spots yellowish-brown on the opposite side; sori globose, minute, scattered or aggregate, on the under surface; epidermis generally closed; spores subglobose, yellow.—On _Pyrola rotundifolia_, &c.