426 FUNGUS-FLORA. 



Sporodesmium polymorphum. Corda. 



Tufts black, opaque, effused, pulverulent; conidia ovoid 

 or angularly elliptical, 40-50 x 25-30 /u, variously muri- 

 forinly septate, blackish-brown, almost opaque ; sporophores 

 short, terete, septate, paler than the conidia. 



Sporodesmium polymorphum, Corda, Icon. Fung., i. p. 7, 

 f. 119 ; Sacc., Syll., iv. n. 2377. 



On bark and wood of oak, birch, &c. 



Sporodesmium piriforme. Corda. 



Effused and somewhat crustaceous, black ; conidia obovate, 

 at first septate, then cellular, 28-30 p. long, brown, semi- 

 pellucid, 2-4-celled ; sporophores colourless, short or of 

 medium length, filiform, flaccid, sometimes slightly curved. 



Sporodesmium piriforme, Corda, Icon. Fung., i. p. 116; 

 Sacc., Syll., iv. n. 2384. 



On rotten saw-dust. 



^ Sporodesmium cladosporii. Corda. 



Tufts effused, olive; conidia ovoid, continuous, at length 

 opaque brown and densely reticulately septate, scarcely con- 

 stricted, 20-24 /A long ; conidiophores obsolete. 



Sporodesmium cladosporii, Corda, Icon. Fung., i. p, 7, t. 11, 

 f. 118; Sacc., Syll., iv. n. 2405. 



On dry pods of Phaseolus vulgaris, stems of Scrophularia, 

 &c. 



Sporodesmium triglochinis. B. & Br. 



Tufts point-like, bright brown, springing from a cellular 

 base; conidia obovate when young, then subglobose and 

 obliquely septate, at length oblong and muriformly septate, 

 8-16 /* diameter; conidiophores short, thickened upwards. 



Sporodesmium triglochinis, B. & Br., Ann. Nat. Hist., n. 

 1607, t. x., fig. 4; Sacc., Syll., iv. n. 2407. 



On Triylochin palustre. 



Sporodesmium chartarum. B. & C. 

 Tufts small, black, velvety, often concentrically arranged 

 and forming small patches ; conidia elliptical or subglobose, 

 at first 2-3-septate, then muriformly septate, 10-16 ^ 

 diameter ; conidiophores short, colourless. 



