126 British Uvredinee and Ustilaginea. 
Uromyces geranii. (D. C.) 
<Z:cidiospores—Pseudoperidia crowded in irregular or roundish 
patches on reddish spots, shortly cylindrical, edges white, at 
first adpressed, afterwards recurved, toothed. Spores roundish, 
finely verrucose, orange, 20-30 X 15-20p. 
Uredospores—Sori dark chestnut-brown, in rounded groups, small 
rounded, soon naked. Spores spherical, shortly elliptical, 
echinulate, pale brown, 20-25 X 19-23m 
Teleutospores—Sori blackish, rounded, often circinate. Spores 
elliptical or pyriform, with a colourless wart-like papilla on 
the summit, smooth, brown, 20-25 X 17-234. Pedicels 
short, deciduous. 
Synonyms. 
Uromyces geranit (D. C.). Winter in Rabh., “ Krypt. Flor.,” 
vol. i. p. 160. 
Uredo geranii. D.C., ‘‘Synop. Plant.,” p. 47. Berk., “ Eng, 
Flor.,” vol. v. p. 380. Sow., t. 398, fig. 5. Grev., “Scot, Crypt. 
Flor.,” t. 8; “Flor. Edin.,” p. 434. Johnst., “Flor. Berw.,” vol. ii. 
p. 201. r 
Trichobasis geranit, Berk. Cooke, “ Hdbk.,” p. 530. i 
Acidium geranit, D. C. Cooke, “Micro. Fungi,” 4th edit. 
p. 199; “Hdbk.,” p. 543. Berk., “Eng. Flor.,” vol. v. p. 371. 
Johnst., “Flor. Berw.,” vol. ii. p. 205. 
Uromyces geranit. Cooke, “ Micro. Fungi,” 4th edit., p. 213 
“Grevillea,” vol. vii. p. 134. 
Exsicati. 
Cooke, i. 107, 440; ii. 50. 
On Geranium sylvaticum, pratense, dissectum, and molle. 
May to October. 
BioLocy.—At the Mycological Conference in Paris, in 1887, Dr. 
Richon exhibited a figure of the uredospores accompanied by large 
clavate, hyaline paraphyses, but I have not observed these in any 
British specimen I have examined. The ecidiospores often cause 
great distortion when they occur on the stems. On the leaves they 
usually occur on reddish spots. Professor Trail finds this fungus 
near Aberdeen, on the two first-named host-plants, but not upon G, 
dissectum or molle. 
