APPENDIX. 223 



face ; epidermis at length bursting longitudinally ; spores sub- 

 globose, reddish-brown, easily dispersed. — On Grasses and Corn. 

 Throughout the summer. Very common. Uredo spores of 

 Fuecinia straminis. (Plate VII. figs. 140-142.) 



Trichobasis linearis, Lev. Long Cokn-Eust; 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. Uredo spores 

 Qi Fucciiiia graminis . (Plate VII. figs. 143, 144.) 



Trichobasis glumarum, Lev. 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 Pyrolse, B. Winteegbeen 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 Fyrola rotmidifolia, &c. 



Trichobasis Petroselini, B. Parsley Rust ; spots 



yellowish ; sori subrotund and oval, confluenf, on both surfaces ; 



■epidermis at length ruptured; spores globose or subglobose, 



occasionally obsuletely pedicellate, pale yellow. — On various 



Umheliiferre. 



Trichobasis Caricina, B. Sedge Rust ; spots red ; sori 

 oval, minute, scattered, surrounded by the ruptured epidermis ; 

 spores subglobose, reddish, then brown. — On Carex jjeiidula, C. 

 ^seudo-cyperus, &c. June to August. Common. Uredo spores 

 of Fuecinia striola. (Plate VllL figs. 170, 171.) 



» * 



Spores brown. 



Trichobasis oblongata, B. Luzula Rust ; spots ob- 

 long, often confluent, yellow-brown ; sori elliptic, on both sur- 

 faces ; epidermis closed; spores brown, obtuse at either extremity. 

 —On Luzula. J\Jav to July. Uredo spores of Fuceinia Luzulce. 

 (Plate VII. figs. 158, 159.) 



Trichobasis Cichoracearum, Ley. Hatvkweed Rust; 

 on both sides of the leaf, dark, fuscous, minute, round, scattered ; 

 snores globose, rarely minutely pedicellate. — On Thistles and 

 Hawkweed. July to September. Common. Uredo spores of 

 Fuecinia compositarum. 



Trichobasis Artemisise, B. Mugwort Rust ; spots ob- 

 literated, brownish on the opposite side; sori subglobose and 



