Chrysomyxa. 253 
HEMICHRYSOMYXA. Winter. 
Having only uredospores and teleutospores, which occur on the same host- 
plant. 
Chrysomyxa pyrole. (D. C.) 
Uredospores—Sori hypophyllous, scattered, generally covering the 
under surface of the leaves, roundish, pulverulent, yellow. 
Spores ovate or elliptical, often angular, coarsely verrucose, 
yellowish orange, 20-23 X 15-22p. 
Teleutospores—Sori orange, then red, flat, waxy. Spores, 110-120 
X 8-1op. 
Synonyms. 
Schrot., oc. cit, 372. Winter, loc. cit., p. 250. 
cidium pyrole. \). C., “ Flore frang.,” vol. vi. p. gg. 
Credo pyrole. Grev., “Flor, Edin.,” p. 440. Johnst., ‘“ Flor. 
Berw.,” vol. ii. p. 198. 
Trichobasis pyrole. Berk., “ Outl.,” p. 332. Cooke, “ Hdbk.,” 
p- 529; “Micro. Fungi,” 4th edit., p. 223, in part. 
Exsiccatz. 
Vize, “ Micro. Fungi Brit.,” 52 
On Pyrola rotundifolia. 
Chrysomyxa empetri. (Pers.) 
Uredospores--Sori orange, roundish or elongate, at first covered by 
the epidermis, then surrounded by it. Spores ovate, elliptical, 
or pyriform, verrucose, orange-yellow, 25-30 X 17-25. 
Synonyms. 
Schrot., Zoe. cit. p. 372. 
Uvedo empetri, Pers. Moug. and Nest., Exs., No. 391. Cooke, 
Seem. Jour. Bot., vol. iv. p. 99; “ Hdbk.,” p. 5273 ‘ Micro. Fungi,” 
4th edit., p. 216. 
On Empetrum nigrum, 
May to September. 
