148 
MILDEWS, RUSTS AND SMUTS 
Trichobasis glumarum, Lev. 
On leaves, culms and spikes of Brachypodium silvaiicum, 
Bromus mollis, Calamagrostis epigaea, Elymus arenaritis, 
Hordeitm vulgaris, Secale cerealis, Triticum caninum, T. 
repens, T. vulgaris. Britain, Europe, Egypt, Japan, and 
N. America. 
Puccinia dispersa, Erikss. and Henn. 
Aecidia. On the under surface of the leaves, also on the 
calyx and fruit, on yellow or reddish-yellow spots, cup- 
shaped, edge recurved, torn ; spores subglobose, minutely 
warted, orange, 20—26 p diam. 
Uredospores. Sori generally on the upper surface of the 
leaves, scattered without order, small, oblong, rusty; spores 
globose or subglobose, echinulate, yellow, 22—28 p diam. 
Teleutospores. Sori on the under surface of the leaves 
or on the leafsheaths, scattered, or sometimes clustered, 
oblong, covered by the epidermis, blackish ; spores oblong 
club-shaped or club-shaped, tip rounded or obliquely nar¬ 
rowed, slightly thickened, generally slightly constricted 
at the septum, base narrowed, smooth, brown, 40—50 x 
12—-20 p, pedicel short ; paraphyses numerous, brownish. 
Syn. Aecidium asperifolii, Pers. 
Uredo rubigo-vera, D.C. 
Puccinia straminis, Fuckel. 
Puccinia rubigo-vera. Winter Plowr., Ured., p. 
167 (in part). 
The aecidia occur on the leaves, calyx and fruit of An- 
chusa arvensis. 
Uredospores and teleutospores on rye— Secale cereale. 
Britain, Europe generally, Asia Minor, and N. America. 
Puccinia bromina, Eriksson. 
Pycnidia. Honey-colour. 
Aecidia. On the under surface of the leaves, or on the 
leafstalks, sometimes also on the calyx, on large, brownish 
or purplish spots, often with a yellowish border, cup¬ 
shaped, edge recurved, torn ; spores angularly globose, 
minutely warted, orange, 18—27 p diam. 
Uredospores. Sori on both surfaces of the leaf, most 
abundant on the upper side, scattered or in clusters, ob¬ 
long, sometimes crowded into each other, rusty ; spores 
globose, subglobose or broadly elliptical, echinulate, yellow, 
20—26 p diam. 
Teleiitospores. Sori on the under surface of the leaf, 
scattered, minute, oblong, covered by the epidermis. 
