142 British Uredinee and Ustilaginee. 
On Scilla bifolia and nutans. 
May and June. 
BIOLOGY.—The presence of the mycelium causes the sori to be 
produced on paler discoloured spots on the leaves and stems. 
Uromyces ornithogali. (Wallr.) 
Teleutospores—Sori dark brown, scattered, elliptical or oblong, on 
the smaller leaves causing various distortions, often confluent, 
at first covered by the epidermis, then pulverulent. Spores 
elliptical or subpyriform, sometimes smooth, sometimes rough, 
pale or chestnut-brown, having a colourless wart-like point 
above, rounded or attenuated below, 25-40 x 17-224. Pedi- 
cels long, slender, deciduous. 
Synonyms. 
Uromyces ornithogali (Wallr.) Winter in Rabh., “ Krypt. 
Flor.,” vol. i. p. 141. 
Erysibe rostellata, var. orntthogalé. Wallr., “Flor. Crypt. 
Germ.,” vol. il. p. 209. 
Uromyces ornithogali, Lévy. Cooke, ‘Grevillea,” vol. vii. 
p. 138. 
On Gagea lutea, L. 
B1oLoGy.—The presence of the mycelium causes variously shaped 
pale spots on the affected leaves. 
Uromyces urticz. Cooke. 
Teleutospores—Subpyriform, apiculate, pale, 30 x 184. Epispore 
thickened, on hyaline pedicels. 
Synonym. 
Uromyces urtice. Cooke, “ Grevillea,” vol. vii. p. 137. 
On Ortica dioica, Shere, Surrey. 
This species has never been found but once. It is remarkable 
that no one except Dr. Cooke should have met with it, seeing how 
common the host-plant is. 
