374 Transactions British Mycological Society. 



Conidiophores short, developing at the base of the sterile hy- 

 phae, colourless, irregularly branched; conidia acrogenous, 

 globose, simple, colourless. 



B, piluliferum Sacc. et March, loc. cit. pi. 2, figs. 5-8. 



Sterile hyphae crowded, slightly bent, smooth or slightly 

 rough, 200-250/X X 3-5-5)^. Conidia globose ii-14/u. diam. 



On rabbit dung. 



On sacking, Baslow. 



The specimen from Baslow grew as a grey felt on old and very 

 dirty sacking. The fungus closely resembles the figures of the 

 original specimens but the spores are larger, up to 20/i, in diam., 

 with a slightly roughened thick epispore. 



Cladosporiuni Typharum Desm. Exs. N. 304. 



Tufts in scattered lines, dark coloured or greyish spots. 

 Conidiophores in groups upright or bent, sparingly septate, 

 more closely septate towards the tips y^-iy^/x x 5-6/t. Conidia 

 elongate or ovoid, punctate, blackish-green, 2-4-celled, 16-22/i, 

 X 5-8/x. 



Found by C. Rea on Typha latifolia, New Pool, Malvern, 

 Worcestershire, Aug. 19 19. 



This species somewhat resembles Heterosporium Typharum 

 Cooke, but the spores are smaller than in that species. 



H elminthosporium Warpuriae Wakef. in Kew Bull. 1918, p. 233. 

 On an injured stem of Warpuria clandestina. Tropical Pits, 

 Kew, July, 1917. (Stapf.) 



Cercospora dubia Wint. in Hedwigia, xxii, p. 10, 1883; Grove in 

 Journ. Bot. LVI, p. 345, 1918. 



On leaves of Atriplex patula. Near the Severn, Worcester, 

 Sept. 

 Microcera coccophila Desm. in Ann. Sci. Nat. 3 ser. X, 359 (1848). 



A specimen of this fungus was collected by Mr Grinling at 

 Woolwich. The habit is that of Microcera but the spores are 

 blunt at the ends, and some of them are larger than the sizes 

 published, being about 120-145/x x 7-9/u.. It is probably a form 

 of the above. 



Communicated by Miss E. M. Wakefield. 



USTILAGINEAE. 



Ustilago perennans Rostr., Overs. K. Dansk. Vid Selsk. Forh. 

 1890, p. 15. 



Spore masses in the ears of the grass dark-brown. Spores 

 globose (rarely ovoid), 5-9 /a diam., the surface clear brown and 

 finely punctate. Mycelium perennial in the root-stock. 



In flowers of A rrhenatherum elatius. Symonds Yat, May, 1914. 

 Leg. H. H. Whetzel. Herts, June, 1919. Leg. C. H. Grinling. 



