Ecidium. 265 
Synonym. 
cidium convallaria. Schum., “ Enum. Plant. Sell.,” vol. it 
p. 224. Winter, Joc. cit, p. 259.. 
On Convallaria majalis. Mr. Birks. 
May to July. 
Aiecidium barbarer. D. C. 
Pseudoperidia amphigenous on rubescent spots, in irregular 
clusters, large, cup-shaped, rather flat, edges whitish, torn or 
crenulate. Spores orange,. subglobose, finely verrucose, 15—- 
25m in diameter. 
Synonym. 
Ecidium barbaree. D. C., “Flore frang.,” vol. il. p. 244. 
Duby, “ Bot. Gall.,” vol. ii. p. 905. Cooke, “ Grevillea,” vol. x. 
p. 115. Winter, loc: cit, p. 267.. 
On Barbarea precox. Plymouth; Mr. Varenne. 
BioLocy.—Sometimes the pseudoperidia occupy the whole leaf- 
surface, causing considerable distortion. 
Ascidium clematidis. D. C. 
Pseudoperidia in roundish clusters on the leaves, often upon 
swellings on the pedicels and young shoots, causing consider- 
able distortion, shortly cylindrical or flat, with white torn 
edges. Spores. subglobose, minutely verrucose, yellow, 20-274. 
in diameter. 
Synonym. 
Winter, Jvc. cit., p. 270. 
Atcidium ranunculacearum, var. cematidis. D. C., “ Flore 
frang.,” vol. ii. p. 243. Cooke, “ Hdbk.,” p. 539. 
On Clematis vitalba. 
May to July. 
BIOLOGY.—Rathay states that this is connected with Melampsora 
populina, Tul. (“Uber auto. und hetercecische Uredineen,” Verhand. 
zoo. bot. Gesell., bd. xxxi. p. 13. Wein: 1881.) I have tried this culture 
