598 THE FUNGI WHICH CAUSE PLANT DISEASE 



Apex not swollen; conidiophores 



many 3. Stachybotrys. 



Apex short-branched, rarely simple 

 Apex short-branched or simple 



Apex not swollen 4. Periconia, p. 598. 



Apex swollen 5. Stachybotryella. 



Apex capitate-branched; branches 

 2 to 3-furcate and spine- 

 bearing 6. Cephalotrichum. 



Hyphffi without apical branches or co- 

 nidiophores 



Conidia globose 7. Trichobotrys. 



Conidia boat-shaped curved; hyphse 



dark-ringed 8. Camptoum. 



Conidia fusoid, sometimes subhya- 



line 9. Acrotheca. 



Fertile hyphsB branched below the apex 

 Hyphae forked below apex; conidia ob- 

 long 10. Synsporium. 



Hyphse repeatedly dichotomous; conidia 



globose or elliptic 11. Dicyma. 



Periconia Bonordin "' 



Hyphse creeping, or obsolete; conidiophores simple, dark, 

 apically fertile; conidia globose, fuscous, solitary on short sterig- 

 mata. Fig. 401. 



Some forty species chiefly saprophytes. 



Trichosporiese (p. 594) 

 Conidia dark, borne singly on short lateral branches. 



Key to Geneba of Trichosporiee 



Hyphse loose, typically saprophytic 

 Hyphse vesiculose-inflated here and there 



Conidia-bearing vesicles pleurogynous. 1. (Edemium. 



Conidia-bearing vesicles acrogenous ... 2. Cystophora. 

 Hyphae not vesiculose-inflated 



Fertile hyphse erect 



