CYLINDRIUM — GEOTRICHUM. 285 



Cylindrium flavo-virens. Bon. 



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

 fusiform, sometimes curved, both ends blunt, 14—15 x 3-3 • 5 fx. 



Cylindrium Jlavo-virens, Bon., Hdbk., p. 34; Sacc., Syll., 

 iv. n. 171. 



On fallen leaves of oak, beech, &c. 



Cylindrium heteronemum. Sacc. 



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

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

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



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



On wood and dunoj. Eare. 



Intermediate in form of conidia between Fusidium and 

 Cylindrium. 



POLYSCYTALUM. Riess. (fig. 21, p. 313.) 



Hyphae scanty, slightly branched, hyaline or smoky ; 

 conidia slender, c^dindrical, truncate at both ends, con- 

 catenate. 



Polyscytalum, Riess, Bot. Ztg., 1853, p. 138; Sacc, Syll., 

 iv. p. 38. 



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



Tufts consisting of h^-phae 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 fang orum, Sacc, Syll., 1622. 



On Nyctalis parasiticae. 



The conidia! stage of Hypomyces asterosporiis. 



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



Mycelium creeping, fertile branches or conidiophores 

 ascending, septate; conidia shortly cylindrical with both 

 ends truncate, colourless, chains of conidia short. 



Geotrichum, 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. 



