APPENDIX. 223 



face ; epidermis at length bursting longitudinally ; spores sub- 

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

 Tliroughout ihe summer. Very common. Uredo spores of 

 Puccimia siraminis. (Plate VII. figs. 140-142.) 



Trichobasis linearis, L6v. Long Cohn-Etist; spots 

 yellow-brown; sori elliptic, then elongated and linear; epidermis 

 bursting; spores oblong or globose, yellow. — On leaves and 

 sheaths of Corn and Grasses. Snmmer. Common. Uredo spores 

 of Fucciniagraminis, (Plate VIl. figs. 143, 144.) 



Trichobasis glumarum, L6v. Glump Rust; sori 

 minute, round, scarcely convex, subgregarious, oHen confluent ; 

 spores globose or subovoid, orange, not pedicellate; epispore 

 smooth. — On the glumes of Cereals. August. 



Trichobasis Pyrolse, B. Winteegbeen Rttst; 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. 



Trichobasis Petroselini, B. Pahsley Rttst ; spots 

 yellowish ; sori subrotuud and oval, confluenr, on both surfaces ; 

 epidermis at length ruptured ; spores globose or subglobose, 

 nrcflsionaUy obsoletely pedicellate, pale yellow. — On various 

 UmbelliferiB. 



Trichobasis Carieina, B. Sedge Rtjst ; spots red ; sori 

 (ival, minute, scattered, surrounded by the ruptured epidermis ; 

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

 pseudo-cyperus, &o. June to August. Common. Uredo spores 

 of Puccinia striola. (Plate VIII. 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 Luzulne. May to July. TSieio spores oi Puccinia Liezules. 

 (Plate VII. figs. 158, 159.) 



Trichobasis Cichoracearum, L^y. Hawkweed Rust ; 

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

 scores globose, rarely minutely pedicellate. — On Thistles and 

 Hawkweed. July to September. Common. Uredo spores of 

 Puccinia compositarum. 



Trichobasis Artemisiee, B. Mugwobt Rust ; spots ob- 

 literated, brownish on the opposite side ; sori subglobose and 



