212 



MONILIALES 



X. Conidia globoid-angulate, stipitellate 

 y. Conidia oblong to fusoid, not stipitellate 

 (3) Conidia mostly single and acrogenous, 

 rarely clustered and acropleurogenous 

 (a) Conidiophores vesiculose-inflated or 

 ramose 

 X. Conidiophores vesiculose-inflated 

 (x) Vesicles pleurogenous 

 (y) Vesicles acrogenous, with a hilum at 

 tip 

 y. Conidiophores ramose 

 (x) Saprogenous 

 m. Conidiophores erect 

 (m) Branches circinate or spirally 

 twisted 

 r. Branches circinate at apex; co- 

 nidia intercalary, muriculate 

 s. Branches spirally twisted; conidia 

 not intercalary 

 (n) Branches straight, sometimes fur- 

 cate, rarely none 

 n. All hyphae more or less creeping 

 (m) Branches curved or lash-like 

 (n) Branches not curved 

 r. Conidia spiny 

 s. Conidia smooth 

 (r) Conidia sessile 

 (s) Conidia on stalks or basidia 

 h. Conidia on tooth-like sterig- 



mata 

 i. Conidia on doliform basidia 

 (y) Biogenous 



m. Conidia pleurogenous, sessile, on 

 radiate hyphae from a sclerotium 

 parasitic in the ovaries of grasses 

 n. Conidia not from a sclerotium 

 (m) Conidiophores vesiculose at tip; 

 conidia 4-8-superposed, ver- 

 ruculose 

 (n) Conidiophores not vesiculose; co- 

 nidia solitary, smooth 

 (b) Conidiophores simple or nearly so 

 X. Sterile hyphae lacking or obsolescent 

 y. Sterile hyphae present 

 (x) Conidia verrucose, pedicellate 

 (y) Conidia not verrucose or pedicillate 

 m. Sterile hyphae bearing curved blunt 

 bristles and 2-3-celled conidio- 

 phores 

 n. Sterile hyphae without bristles 

 (m) Conidia in pairs at the apex 

 (n) Conidia single 



r. Conidia in a dense cylindric mass 

 s. Conidia not in a dense mass 



Goniosporium 4:280 

 Arthrinium 4:279 



Oedemium 4:297 

 Cystophora 4:298 



Acrospira 4:282 

 Streptothrix 4:282; 55 

 Virgaria 4:280 

 Campsotrichum 4:295 

 Zygodesmus 4:283; 55 

 Trichosporium 4:288 



Rhinocladium 4:295 

 Basisporium 18:533 



Ustilaginodes 17:492 



Hemispora 22:1346 

 Glenospora 4:298; 55 

 Monotospora 4:299 

 Zygodesmella 



Pirostomella 



Microclava 



Microtypha 22:1352 

 Acremoniella 4:302 



