Classification . 189 



Anemone nemorosa, Banunculus acris, R. repens, R. 

 hulhosus, Hepatica triloba, Ficaria ranunculus, Actsea 

 spicata. Not uncommon. 



Urocystis violse, Fisclier. 



Sori black, often in the form of scattered pustules 

 seated on livid patches ; spore-clusters globose or 

 elliptical, 30-50 x 20-45 p.; central fertile spores 

 rarely solitary, up to eight in number, globose or sub- 

 angular, obscure brown, 10-17 /x diameter; peri- 

 pheral sterile cells hemispherical, pale brown, 6-10 

 /jb diameter ; promycelium short, sporidia usually 

 numerous, cylindrical, produced at the apex of the 

 promycelium. 



Urocystis violse, Fischer, Aper9u, p. 41 ; Sacc. Syll. 

 vii. ii. n. 1905 ; Plow. Brit. Ured. and Ustilag. p. 

 288; Cke. Hdbk. p. 517; Cke. Micr. Fung. t. ix. 

 figs. 185, 186. 



Granularia viola3, Sow. Eng. Fung. t. 440. 



On the stems and veins of leaves of Viola odorata, 

 V. liirta, V. sylvatica, V. tricolor. Not uncommon. 



Urocystis primulicola, Magnus. 



Produced in the ovary, becoming pulverulent, 

 brownish-black ; spore-clusters spherical or irregular, 

 21-50 fi diameter; central fertile spores brown, 

 smooth, subangular from mutual pressure, 2 — 6 in 

 number, rarely as many as ten, 9-15 /m diameter ; 

 peripheral sterile cells numerous, thin-walled, pale 

 brown, smooth, 6-8 p. diameter ; promycelium 

 cylindrical, hyaline, sporidia terminal, 1 — 4, ovoid or 

 oblong, frequently pyriform, very shortly pedicellate, 

 9-18 X 4-9 /x, hyaline. 



