174 British Fttngi, 



roots of the liost ; resting-spores brown, very variable 

 in form, globose or irregularly elongated, 10-13 //, 

 or 14-17 X 10 yu. 



TlstUago marina, Durieu, Ann. Sci. Nat. 1866; 

 Grevillea, v. 14, p. 90 ; Plow. Brit. Ured. and 

 Ustilag. p. 275 ; Sacc. Syll. vii. pt. ii. n. 1751. 



On the roots of Scirpus parvulus. Does not appear 

 to be a typical Ustilag o. Hare. 



Ustilago hypogea^ Tul. 



Forming hard, blackish, crust-like patches on the 

 root ; resting-spores globose, angular, or broadly 

 elliptical, dark brown, smooth, 17-20 or 20-24 x 14-18 



Ustilago hyyogea, Tulasne, Fung. Hypogsei, p. 196 ; 

 G-rev. V. xiii. p. 52 ; Plow. Brit. Ured. and Ustilag. 

 p. 276 ; Sacc. Syll. vii. ii. n. 1752. 



On root of Linaria spuria. Rare. 



Ustilago caricis, Fckl. 



Forming hard, globose, black lumps within the 

 glumes; resting-spores opaque, brown, very irregular, 

 globose, angular, or broadly elliptical, minutely granu- 

 lar, 12-17 or 12-30 x 8-15^. 



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

 Syll. vii. ii. n. 1685; Cke. Micr. Fung. t. v. figs. 96, 

 97 ; Plow. Brit. Ured. and Ustilag. p. 276. 



In the inflorescence of many species of Car ex and 

 Rlujiicospora alha. Not uncommon. 



Ustilago bistort arurn, Korn. 

 Forming large, wart-like lumps on the leaves, seated 

 on discoloured spots, soon bursting, and then violet- 



