178 British Fitngi. 



imcertain, owing to absence of information respecting 

 germination. 



B. Restinrj- spores reticulated. 



Ustilago scahiosse, Wint. 



Produced in the anthers and soon covering the 

 whole inflorescence with a powdery mass varying from 

 pale pink, through brownish lilac to violet ; resting- 

 spores globose, angularly globose, or broadly ellip- 

 tical, almost colourless, epispore furnished with thin, 

 slightly raised ridges combined to form a fine-meshed 

 network, 10-13, or 8-10 x 10-15 fi, sometimes much 

 larger, reaching to 17-20 fjb long; promycelium 

 cylindrical, usually 3-septate, sporidia elliptical, 

 produced, apically and laterally. 



Ustilago scahiosse, Winter, Die Pilze, p. 99 ; Sacc. 

 Syll. vii. ii. n. 1733; Plow. Brit. Ured. and Ustilag. 

 p. 279. 



Farinaria scahiosse, Sow. Eng. Fung. t. 396, f. 2. 



Ustilago flosculorum, Tulasne, Cke. Hdbk. p. 515; 

 Cke. Micr. Fung. t. vi. figs. 123—125. 



Uredo flosciilorum, Winter, Die Pilze, p. 99 ; Plow- 

 Brit. Ured. and Ustilag. p. 279. 



Ustilago scahiosse^ Winter, Sacc. Syll. vii. i. n. 1733. 



Ustilago succisae, Cke. Micr. Fung. ed. 4, p. 230. 



On the anthers of Scahiosa arvensis, 8. columharia, 

 S, succisa. Not uncommon. 



Ustilago utriculosa, Tul. 



Formed in the flowers which become in conse- 

 quence much distended, at length powdery, violet- 

 black; resting- spores globose, violet, translucent, 



