86 



Spores dry. ISARIACEI. 



Mass of spores moist, somewhat gelatinous. STILBACEI. 



191. Fertile threads blackened. Spores mostly compound. 



DEMATIEI. 

 Fertile threads not blackened. 



Fertile threads hardly distinct from the mycelium. Spores very 



abundant. SEPEDONIEI. 

 Fertile threads distinct from the mycelium. 



Spores mostly simple, naked. MUCEDINES. 



Spores covered with threads which form a kind of envelope. 



TBICHODERMACEI. 



192. Growing on living plants. Described in 189 and 193 



Growing on dead or dying plants. 



Growing on the outside of the plant. Fructifying surface naked. 



TOBULACEI. 

 Growing under the surface or cuticle of other plants. 



Perithecium more or less distinct. SPH^RONEMEI. 

 Perithecium none. MELANCONIEI. 



193. Peridium cellular. 

 Peridium none. 



Spores nearly globular, simple. C^EOMACEI. 



Spores mostly oblong, usually divided into two or more compart- 

 ments. PucciNLasi. 



