Orocystis, 285 
On Dactylis glomerata, Triticum repens, Holchus lanatus. 
June to September. 
BioLocy.—Fischer v. Waldheim says that the germination is 
similar to that of 7. ¢vdtict. 
UROCYSTIS. Rab. 
Pulverulent ; spore-balls consisting of a variable number of 
dark, smooth, large teleutospores placed centrally, surrounded by 
a number of smaller, paler pseudospores, which do not germinate. 
Germination of the central teleutospores as in Tilletia. 
Urocystis oceulta. (Wallr.) 
Spore-masses black, forming long lines on the leaves, stems, and 
leaf-sheaths. Spore-balls round or elliptical, consisting of 1 to 
3 spores, surrounded by a variable number of pseudospores, 
16-25 X 15-20. .Teleutospores irregularly rounded, con- 
tiguous surfaces flattened, smooth, opaque, dark brown, 
10-184 in diameter. Pseudospores irregularly but generally 
distributed around the circumference of the spore-ball, sub- 
hemispherical, pale brown, 4-6 high. Mycelium annual. 
Synonyms. 
Schrot., Zoc. cit, p. 279. Winter, Zoe. ciz., p. 119. 
Lrysibe occulta, Wallr., “ Flor. Crypt. Germ.,” vol. ii, p. 212: 
Crocystis occulta, Preuss. Cooke, “ Hdbk.,” p. 517. 
Urocystis parallela, B. and Br. Cooke, “ Micro. Fungi,” 4th 
edit., p. 232, t. ix. figs. 187, 188, 
Uredo parallela, Sow. Berk., “ Eng. Flor.,” vol. v. p. 375, in 
part. 
On Secale cereale. 
BIOLOGY.—See p. 93. 
Urocystis agropyri. (Preuss.) 
Produced in parallel lines on the leaves, black. Spore-balls sub- 
globose, 20-26 X 15-204, Teleutospores from 1 to 3, 
