OEDOCEPHALUM. 289 



Oidiiim monilioideSj Link, sp. pi. p. 122; Sacc, Syll., iv. 

 n. 219. 



On the liviniT leaves and culms of various orrasses. The 

 conidial stage uf Erysiphe graminis. 



Subsect. 2. Macronemeae. Sacc. 



Tribe 3. Ceplialosporieae. Sacc. 



OEDOCEPHALUM. Preuss. (figs. 4, 5, p. 274.) 



Sterile hyphae scanty; creeping; fertile hyphae erect, 

 simple, gregarious, apex swollen and rough with minute 

 point-like projections, to which the conidia are attached ; 

 very slightly or not at all areolate; conidia sessile, con- 

 tinuous, globose or oblong, hyaline or bright coloured. 



Oedoceplialum^ Preuss, Fung. Hoyersvv., n. 100; Sacc, 

 Syll., iv. p. 47. 



Distinguished from Wiopalomyces in the swollen apex of 

 the fertile hyphae not being broken up into polygonal 

 jjortions. 



Oedocephalum roseum. Cooke. 



Forming effused rose-coloured tufts ; fertile hyphae short, 

 simple, septate, heads subglobose; conidia broadly elliptical 

 with a basal apiculus, colourless, smooth, 11-14 X 8-10 /a. 



Oedoceplialum roseum^ Cooke, Grev., i. p. 184, t. 22, f. 8 ; 

 Sacc, Syll., 226. 



On paper and old cloth, &c. 



Individual tufts almost invisible to the naked eye, but 

 gregarious, and forming extended patches. 



Oedocephalum laeticolor. B. & Br. (fig. 4, p. 274.) 



Very minute, brick-red with a rosy tinge ; fertile hyphjie 

 equal, pallid, apex inflated, not 1 mm. high ; heads sub- 

 globose, conidia subglobose or broadly elliptical, apiculato 

 at the base, minutely warted, 15-20 X 9-12 /x. 



Oedocephalum laeticolor^ B. & Br., Ann. Nat. Hist., no. 

 1056, t. 14, f. 12 ; Sacc, Syll., 228. 



On dung of sheep. 



VOL. III. U 



