Brachytriphragmium. 219 
their expansion, more rarely in compact, extended sori on the 
under surface of the leaves. Spores brilliant orange, finely 
verrucose, globose, oval, or ovate, pedicellate, 18-24 X 17-22p. 
Secondary uredospores—In summer and autumn. Sori hypophyll- 
ous, small, round, orange. Spores globose or elliptical, finely 
echinulate, orange-yellow, 18-30 X 18-28. 
Leleutospores—Sori small, round, black, persistent, but pulverulent, 
on the leaves and petioles. Spores globose, rough, with obtuse 
warts, chestnut-brown, 35-504 in diameter. Pedicels colour- 
less, persistent.. 
Synonyms. 
Triphragmium ulmarie@ (Schum.). Winter in Rabh., “ Krypt. 
Flor.,” vol. i. p.. 225. 
Credo uimarie. Schum., “ Enum. Plant. Sell.,” vol. ii. p. 227. 
Credo effusa. Berk. “ Eng. Flor.,” vol. v. p. 381. Grev., t. 19. 
Puccinia ulmaria, D.C. “ Eng. Flor.,” vol. v. p. 368. Grev., 
“Flor. Edin.,” p. 433. Johnst., “ Flor. Berw.,” vol. ii. p. 194. 
Pusinia spiree. Purton, “ Midl. Flor.,” vol. ili. p. 304. 
Uromyces ulmaria, Lév. Cooke, “ Micro. Fungi,” 4th edit., 
p. 212, t. vil. figs. 147, 148.. 
Triphragmium ulmaria, Link. Cooke, “ Hdbk.,” p. 492; 
“Micro. Fungi,” 4th edit., p. 202, t. iii. fig. 48. 
Lixsiccate. 
Berk., 343. Cooke, 1. 23, 75; il. 146, 212; “L. F.,” 4, 25. 
Vize, “ Fungi Brit.,” 136. 
On Spivea ulmaria. 
May to October. 
BioLocy.—It is not difficult to find the teleutospores still attached 
to the foliage in spring. These will germinate very readily if placed 
in water. 
Triphragmium filipendule. (Lasch.) 
Primary uredospores—Spores oblong or pyriform, often as much 
as 35 long. 
Secondary uredospores—Sori scattered, roundish, at first covered 
by the epidermis, then surrounded by it, orange. Spores 
globose or ovate, pedicellate, orange. 
