OEDOCEPHALUM. 289 



Oidium monilioides, Link, sp. pi. p. 122; Sacc., Syll iv 

 n. 219. 



On the living leaves and culms of various grasses. The 

 conidial stage of Erysiphe graminis. 



Subsect. 2. Macronemeae. Sacc. 



Tribe 3. Ceplwlosporieae. 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. 



Oedocephalum, Preuss, Fung. Hoyersw., n. 100; Sacc., 

 Syll., iv. p. 47. 



Distinguished from Rhopalomyces in the swollen apex of 

 the fertile hyphae not being broken up into polygonal 

 portions. 



Oedocephalum roseum. Cooke. 



Forming effused rose-coloured tufts ; fertile hyphao short, 

 simple, septate, heads subglobose ; conidia broadly elliptical 

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



Oedocephalum 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 hyph.no 

 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 //.. 



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

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

 On dung of sheep. 



