A uteupuccinia. 151 
Synonyms. 
Puccinia variabilis. Grev., “Scot. Crypt. Flor.,” t. 75; ‘ Flor. 
Edin.,” p. 431. Johnst., “Flor. Berw.,” vol. ii p. 196. Berk., 
“Eng. Flor.,” vol. v. p. 365. Cooke, “ Hdbk.,” p. 500; ‘ Micro. 
Fungi,” 4th edit., p. 207, t. 4, figs. 82, 83. 
Ecidium taraxact. Grev., “ Flor. Edin.,” p. 444. 
cidium grevillei. Grove, Jour. of Bot., May, 1886. 
On Zaraxacum officinale. 
July to October. 
BIOLOGY.—Mr. H. T. Soppitt met with this AZcidium at Grassing- 
ton, in Yorkshire, and found, by applying the zcidiospores to healthy 
plants of Taraxacum officinale, the uredospores and teleutospores were 
produced in about fourteen days. Greville’s description of the Aicidium 
is clear : “ Spreading over the whole leaf, and generally collected into 
numerous little clusters, with single ones scattered between them.” 
The Acidium to Puccinia sylvatica, which also occurs on Taraxacum, 
has its pseudoperidia not scattered but collected into large clusters. 
In July, 1888, I found the zcidiospores of P. vardabclis at Watlington, 
near King’s Lynn, and successfully repeated Mr. Soppitt’s experiment. 
Puccinia pulverulenta. Grev. 
Aicidiospores—Pseudoperidia flat, scattered over the whole surface 
of the leaves. Spores subglobose, finely verrucose, orange- 
yellow, 16-26 in diameter. 
Uredospores—Sori scattered or circinating, often confluent, pul- 
verulent. Spores elliptical or ovate, echinulate, brown, 20-28 
X 15-25p¢- 
Teleutospores—Sori dark brown, often concentric, pulverulent. 
Spores elliptical or oblong, centrally constricted, apex thick- 
ened, hooded, base generally rounded, smooth, brown, 24-35 
x 16-204. Pedicels colourless, deciduous. 
Synonyms, 
Puccinia epilobii tetragoni (D. C.). Winter in Rabh., “ Krypt. 
Flor.,” vol. i. p. 214. 
Uredo vagans, var. epilodit. D. C., “Flore frang.,” vol. ii, 
p. 228. 
