CYLINDRIUM— GEOTEICHtlM. 285 



Cylindrium. flavo-virens. Bon. 



Tufts thin, plane, yellowisli-green ; conidia cylindric- 

 fusiform, Bometimes curved, both ends blunt, 14—16 x 3-3 • 5 p.. 



Cylindrium flavo-virens, Bon., Hdbt., p. 34; Sacc, Syll., 

 iv. n. 171. 



On fallen leaves of oak, beech, &c. 



Cylindrium heteronemum. Saco. 



Tufts thin, small, white ; oonidiophores not septate, simple 

 or rarely forked above ; conidia rather variable in form, cylin- 

 drical with blunt ends or fusoid, 15-40 x 3-4 fi., colourless. 



Cylindrium heteronemum, Sacc, Syll., iv. 177. 



On wood and dung. Eare. 



Intermediate in foiTU of conidia between Fusidium and 

 Cylindrium. 



POLYSCYTALTJM. Eiess. (fig. 21, p. 313.) 



Hyphae scanty, slightly branched, hyaline or smoky ; 

 conidia slender, cylindrical, truncate at both ends, con- 

 catenate. 



Polyscytalum, Biess, Bot. Ztg., 1838, p. 138 j Sacc, Syll., 

 iv. p. 38! 



Polyscytalum fungorum. Sacc (fig. 21, p. 313.) 



Tufts consisting of hyphae that are fasciculate at the 

 base, brownish, colourless above, and running off into long, 

 slender chains of conidia, that measure 10—18 x 3, hyaline, 

 cylindrical, truncate at both ends. 



Polyscytalum fungorum, Sacc, Syll., 1622. 



On Nyctalis parasiticae. 



The conidial stage of Hypomyces asterosporus. 



GEOTEICHUM. Link. (fig. 17, p. 313.) 



Mycelium creeping, fertile branches or oonidiophores 

 ascending, septate; conidia shortly cylindrical with both 

 ends truncate, colourless, chains of conidia short. 



Geolriclmm, Link, Obs., i. p. 53 ; Sacc, Syll., iv. p. 39. 



Distinguished from Cylindrium by the presence of creeping, 

 interwoven mycelium, and the shortly cylindrical conidia 

 with truncate ends. 



