RHOPALOM YCES BOTRYOSPORIUM. 29 1 



Rhopalomyces elegans. Corda. 



Fertile hyphae erect, aseptate, colourless, vesicles spherical, 

 distinctly hexagonally areolate, centre of the areolae 

 papillate ; conidia elliptic-oblong, hyaline then tinged with 

 brown, 35-40 x 18 p.. 



Rhopalomyces elegans, Corda, Prachtflora, p. 3, t. ii. ; Sacc., 

 Syll., iv. n. 239. 



On decaying herbaceous stems, &c. 



Rhopalomyces pallidus. B. & Br. (figs. 19, 20, 

 p. 274.) 



Pale fawn-colour, effused, fertile hyphae forked, flexuous ; 

 conidia minute, supported on the papillae occupying the 

 centre of the areolae, 10 x 6 //,. 



Rhopalomyces cervinus, B. & Br., Ann. Nat. Hist., n. 504, 

 t. v. f. 2 ; Sacc., Syll., iv. n. 241. 



On decayed .Russian matting. Broadly effused, forming 

 fawn-coloured, subfurfuraceous patches. 



BOTRYOSPORIUM. Corda. (figs. 3, 4, p. 358.) 



Mycelium creeping ; fertile hyphae, ascending, septate, 

 simple or branched, and furnished with numerous short 

 lateral branches; tips of the short lateral branchlets each 

 bearing a globose head of spores that are produced on 

 minute spine-like spicules present at the tip of the 

 branchlet; conidia colourless, the heads soon dispersing. 

 Each spicule bears a cluster of spores, the whole forming 

 the head. 



Botryosporium, Corda, Anl., p. 53 ; Sacc., Syll., iv. p. 54. 



Botryosporium diffusum. Corda. (figs. 3, 4, p. 358.) 

 Fertile hyphae long, ascending, often more or less forked, 

 septate, colourless, bearing numerous scattered short branch- 

 lets of equal length, each with 3-4 spicules at the tip, each 

 of these spicules bears a cluster of conidia, the whole forming 

 a globose head. Conidia broadly ellipsoid or globose, 

 colourless. 



Botryosporium diffusum, Corda, in Sturm, Deutschl. Fl. ; 

 Sacc., Syll., iv. n. 265. 



On rotten wood, branches, leaves, &c. 



u 2 



