Classificatio7i . 1 8 1 



florescence is destroyed by the parasite, and the 

 involucre remains closed. Not common. 



JJstilago carditi, Fisch, v. Wald. 



Produced in the inflorescence, brown in the mass ; 

 resting-spores globose or broadly elliptical, violet, 

 with very high ridges combined to form a network, 

 15-20 X 10-15 /jl; promycelium cylindrical, septate, 

 sporidia ovoid. 



JJstilago cardui, Fischer von Waldheim, Bull. Soc. 

 Nat. Moscow, 1867, v. i. ; Sacc. Syll. vii. ii. n. 1738; 

 Plow. Brit. Ured. and Ustilag. p. 282 ; Cke. Micr. 

 Fung. ed. 4, p. 231. 



On Garduus acanthoides. Rare. 



Sphacelotheca, De Bary. 



Resting-spores contained in a distinct receptacle, 

 furnished with a columella, and becoming open at the 

 apex, solitary ; promycelium cylindrical, triseptate, 

 producing sporidia laterally that conjugate in pairs. 



Sphacelotheca, De Bary, Yergleich. Morph. Pilze, 

 p. 187 ; Schroeter, Pilze Schles. p. 274; Plow. Brit. 

 Ured. and Ustilag. p. 282 ; Sacc. Syll. vii. ii. p. 

 499. 



Readily recognized by the highly diflferentiated 

 receptacle and columella formed of fungal elements. 



Sphacelotheca hydro piper is, De Bary (fig. 101). 



Produced in ovaries which become more or less 

 swollen, projecting in a horn-like manner, eventually 

 opening at the apex and becoming pulverulent, 

 blackish violet ; resting-spores globose, angularly 



