GENERA OF FUXGI 



(3) Hymenium of gills or gill-like veins 

 II. Definite hymenium lacking; spore-mass gelatinous 

 or powdery, typically enclosed in a peridium, 

 or elevated at maturity 



1. Gleba more or less gelatinous, enclosed at first 



in a volva, then raised on the receptacle 



2. Gleba firm or powdery, not gelatinous, enclosed 



in a peridium 



a. Peridium epigean 



(1) Gleba typically powdery or cellular, en- 



closed in a more or less globose peridium 

 which opens irregularly or by a definite 

 mouth 



(2) Gleba in seed-like sporiangioles which are 



borne in a more or less cup-shaped peri- 

 dium 



b. Peridium hypogean, closed 



Lycoperdaceae 116 



Nidulariaceae 120 



Hymenogastraceae 119 



Fungi Imperfecti 



I. Conidia present 



1. Conidia in globoid 



cup-shaped or hysterioid 

 pyenidia 



a. Pyenidia fleshy or waxy, bright colored 



b. Pyenidia typically membranous to carbonous, 



dark, brown or black 



(1) Pyenidia more or less globose, rarely cylin- 



dric 



(2) Pyenidia dimidiate, shield-shaped 



(3) Pyenidia disciform, cup-shaped or hyster- 



ioid 

 2. Conidia not in pyenidia 



a. Hyphae short or obsolete, borne on a matrix 



or stratum 



b. Hyphae not on a matrix, typically well-devel- 



oped, but sometimes short or even lacking 



(1) Hyphae in more or less loose cottony 



masses 



(a) Hyphae and conidia clear or bright col- 



ored 



(b) Hyphae and conidia both typically dark 



or one or the other always dark 



(2) Hyphae compactly united to form a globose 



to cylindric body which is often stalked 



(a) Hyphal body cylindric to capitate, stalked, 



i. e., a synnema 



(b) Hyphal body more or less globose, sessile, 



i. e., a sporodochium 

 II. Conidia lacking 



Phomatales 

 Zythiaceae 



Moniliaceae 

 Dematiaceae 



121 

 128 



138 



146 



