426 rUNGUS-FLOEA. 



Sporodesmium polymorphTim. Corda. 



Tufts black, opaque, effused, pulverulent; conidia ovoid 

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

 formly septate, blackish-brown, almost opaque ; sporopbores 

 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 v^ood of oak, birch, &c. 



Sporodesmium piriforme. Corda. 



Effused and somewhat crustaceous, black ; conidia obovate, 

 at first septate, then cellular, 28-30 /x 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 jx long; conidiophores obsolete. 



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

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



On dry pods of PJiaseolus vulgaris, stems of Scropliularia, 

 &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, 

 8-1(5 fx diameter; conidiophores short, thickened upwards. 



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

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



On Triglochin 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 fx 

 diameter ; couidiophores short, colourless. 



