198 British Uvredinee and Ustilaginee. 
yellow, 18-27, sometimes as much as 35 long. Mycelium 
diffused throughout the host-plant. 
Teleutospores—Sori brown, few, small, scattered, elliptical or elon- 
gate, long covered by the epidermis. Spores broadly oval, 
often almost globose, slightly constricted, apex not thickened, 
thickly verrucose, brown, 26-48 X 20-354. Pedicels short, 
colourless, deciduous. Mycelium localized. 
Synonyms. 
Puccinia tragopogi (Pers.). Winter in Rabh., “ Krypt. Flor.,” 
vol. 1. p. 209. 
Acidium tragopogt. Pers., “Syn.,” p. 211. Berk., ‘ Eng. 
Flor.,” vol. v. p. 370. Sow., t. 397, fig. 2. Cooke, “ Hdbk.,” 
p- 537; ‘‘ Micro. Fungi,” 4th edit., p. 195, t. 1, figs. 1-3. 
Ecidium cichoracearum, D.C. Johnst., “ Flor. Berw.,” vol. ii. 
Pp. 205. 
Puccinia sparsa. Cooke, “Hdbk.,” p. 498; “ Micro. Fungi,” 
4th edit., p. 205. 
Puccinia syngenesiarum, Link. Johnst., “ Flor. Berw.,” vol. ii. 
p. 197, in part. 
Exsiccati, 
Cooke, i. 5, 330; ii. 79; “LF,” 51. Vize, “ Micro. Fungi,” 
158; ‘Micro. Fungi Brit.,” 133. 
On Zragopogon pratensis. 
April to September. 
BioLoGy.—The life-history of this species was first worked out by 
De Bary (“ Champ. parasit.,” Azan. Sc. Nat., 1861, 4th series, t. xx., 
pp. 76 and 87-88 of the reprint). He found the ecidiospores to 
have a colourless epispore, with three germ-pores ; that when they 
were sown upon the young leaves of Tragopogon pratensis and porri- 
folius they gave rise to the teleutospores, with a localized mycelium at 
the place where the zcidiospores were placed. Mixed with the teleu- 
tospores are a very few uredospores. The teleutospores give rise, 
when placed upon young plants, to a mycelium, which pervades the 
whole of the plant. The infected plants produce the zecidiospores on 
the leaves, involucre, and receptacle. The mycelium is to be found in 
the upper part of the root-stock. 
I have cultivated this fungus for several years. Sometimes the 
