Classification. 179 



epispore with tliin ridges 2*5-3 /u, high, combined to 

 form an irregularly polygonal network, meshes 9-12 

 yu diameter; promycelium cylindrical, o-septate 

 sporidia elliptical, produced laterally. 



Ustilago utriculosa^ Tulasne, Mem. sur les Ustilag. 

 p. 102, t. iv. figs. 2—6; Sacc. Syll. vii. ii. n. 1737; 

 Plow. Brit. Ured. and Ustilag. p. 280 ; Cke. Hdbk. 

 p. 514 ; Cke. Micr. Fung. t. vi. figs. 112 — 11(3. 



On Polyrjonuin lapathifolium, P. pevsicariaj P. 

 hych'opiper, P. aviculare, P. convolvulus. Not un- 

 common. 



Ustilago violacea, Fuckel. 



Produced in the anthers, soon becoming powdery, 

 blackish-violet ; resting-spores subglobose, lilac, epi- 

 spore with ridges about 2 /jl high, combined to form 

 an irregular network with meshes 6-9 fju across; 

 promycelium fusiform, generally 3-septate, sporidia 

 elliptical, produced at the apex and laterally. 



Ustilago violacea, Fuckel, Symb. Myc. p. 39 ; Sacc. 

 Syll. vii. ii. n. 1731 ; Plow. Brit. Ured. and Ustilag. 

 p. 280. 



Ustilago antherarum, Cke. Hdbk. p. 515 ; Cke. 

 Micr. Fung. t. v. figs. 102—104. 



On Silene inflata, 8, nutans, 8. maritima, 8aponaria 

 officinalis, Cerastium viscosum, Pinguicula alpina, 

 8tellaria graminea, 8. Holostea, Lychnis diurna, 

 L. vespevtina, L. flos-cuculi Common. 



Ustilago major, Schroet. 

 Produced in the anthers, becoming pulverulent, 

 violet-black ; resting-spores globose or elongated, 

 violet, epispore with ridges about 1 ^l high, com- 



N 2 



