120 HWMEXOGASTRACEAE— NIDULARIACEAE 



(a) Endosporiuin and cxosporium separated by a -hyaline mucus 



Leucogaster 9: 281 



(b) Endosporium and exosporium contiguous 

 x. Spores elliptic to lanceolate, smooth 



Hysterangium 7: 155 

 y. Spores globose, rough or spiny 



(x) Peridium lanate; basidia usually 7-spored 



Sclerogaster 11:169 

 (y) Peridium not lanate; basidia 3-4-spored 

 m. Gleba with a sterile base, radicate 



Octaviania 7: 158 

 n. Gleba without a sterile base, not radicate 



Martellia 16: 252 

 2. Peridium separating from the gleba with difficulty or not at all 



a. Peridium covered with thread-like masses of mycelium 



(1) Spores hyaline Rhizopogon 7: 161 



(2) Spores colored Melanogaster 7: 164 



b. Peridium without thread-like masses of mycelium 



(1) Spores spiny 



(a) Gleba percurrent by a columella 



Arcangeliella 16:255 



(b) Gleba without a columella Hydnangium 7: 175 



(2) Spores not spiny, smooth, verrucose, rugose, etc. 



(a) Gleba with branching columella and sterile base 



Dendrogaster 17:240 



(b) Gleba without columella or sterile base 



Hymenogaster 7: 168 



(inch Chamonixia, Leucophleps 

 16: 251) 



II. Peridium wall lacking 



1. Hypogaeous 



a. Spores elliptic, striate-sulcate Gautiera 7: 177 



b. Spores globose, spiny or warty Gymnomyces 16:249 



2. Epigaeous; spores globose, warty Macowanites 7:179 



Family 69. NIDULARIACEAE 

 7 : _>S. 9: 265, 1 1 : 156. 14 : 256. 16 : _'-"). 17: -'14 

 Epigaeous. fimicole or lignicole. funnel-shaped to cup-shaped, leathery, con- 

 taining one to many k-ntiform or globoid sporangioles, the latter attached by a cord 

 to the wall of the peridium ; spores elliptic, smooth. 



I. Peridium single 



1. Peridium with several to many sporangioles 



a. Peridium torn at the apex in opening Nidularia 7:28 



b. Peridium opening by a deciduous membrane 

 (1) Sporangioles attached to wall by a cord 



(a) Spores mixed with filaments; peridium of three united layers 



Cyathus 7: 32 



