282 British Uredinee and Ustilaginee. 
Synonyms. 
Schrot., Zoe. cit, p. 274. Winter, doc, cé¢., p. Tol. 
Uredo tragopogi, Pers., “Disp. Meth.,” p. 57. 
Ustilago receptaculorum, Fries. Cooke, ‘ Hdbk.,” p. 515; 
“ Micro. Fungi,” 4th edit., p. 230, t. v. figs. 92-95. 
; LExstccatt, 
Cooke, i. 59; il. 434. Vize, “Micro, Fungi,” 134. 
On Tragopogon pratensis, 
May to July. 
BIOLoGy.—See p. 80. 
Ustilago cardui, F. v. Waldh. 
Spore-masses brown, produced in the florets. Teleutospores 
globose or shortly elliptical, violet, with very high reticulating 
ridges, 15-20 10-15. 
Synonym. 
Ostilago cardui, Waldh. Bull, Sc. Nat. de Moscou, 1867, 
vol. i, Cooke, ‘ Micro, Fungi,” 4th edit., p. 231. Schrot, Zoc. 
cit, p. 274. Winter, loc. cét., p. 101. 
On Carduus acanthoides. 
July and August. 
BIoLocy.—See p. 78, 
SPHACELOTHECA. De Bary. 
Teleutospores contained in a compact receptacle, formed of 
barren cells provided with a columella, and open above. Teleu- 
tospores simple. Germination as in Ustilago. 
Sphacelotheca hydropiperis. (Schum.) 
Spore-masses black, elongated, projecting from the perianth, 
formed in the ovary, at length opening at the top and allow- 
ing the dusty teleutospores to escape. Teleutospores globose 
or elongated, dark violet, transparent, smooth, 9-12 X 8-11. 
