Micropucctnia. 205 
Lexstecatt. 
Berk., 329: Cooke, i. 48; ii. 132. Vize, “ Fungi Brit.,” 29. 
On Cotyledon umbilicus. 
May and June. 
BIOLOGY.—The small sori are surrounded by a pseudoperidium, 
from which the spores eventually fall out, leaving a honeycomb-like 
matrix. 
Puccinia fusea. (Relhan.) 
Teleutospores—Sori black-brown, scattered equally over the whole 
surface of the leaves, small, round, pulverulent, often con- 
fluent. Spores formed of two almost spherical cells, which 
are flattened at their point of contact, hence the spores are 
strongly constricted and easily fall apart, thickly covered with 
large warts, brown, 30-50 X 15-24p. Pedicels stout, hyaline. 
Mycelium perennial. 
Synonyms. 
Puccinia fusca (Relh.). Winter in Rabh., “ Krypt. Flor.,” vol. i. 
Pp. 199. 
cidium fuscum. Relh., “Flor. Cantab. Suppl.,” ii. 
Pucctinia anemones. Pers., “Syn.,” p. 226. Berk., “Eng. 
Flor.,” vol. v. p. 367. Cooke, “ Hdbk.,” p. 503 ; ‘‘ Micro. Fungi,” 
4th edit., p. 209, t. iv. figs. 64, 65. 
LExsiccatt, 
Baxter, 82. Berk., 222. Cooke, i. 43; ii. 530; “L. F,” 18. 
Vize, “ Fungi Brit.,” 26. 
On Anemone nemorosa. 
April to July. 
BIOLOGY.—The inycelium is perennial, and was found by De Bary 
in the upper part of the rhizome. The teleutospores are accompanied 
by spermogonia. The ecidiospores (. leucospermum), which con- 
tinental botanists regard as belonging to this Puccinia, are much less 
common than the teleutospores, and further experimental culture is 
desirable as to the life-history of this well-known and widely distributed 
species. 
