Pi.cell.aph. 9.GASTEROMYCE. 565 
C. Peridium thin, pedicelled or regular, brittle ; fibres 
growing from the base, enclosed; sporidia conglobated. 
Physaridee. 
Peridium double; columell distinct... Dipymium. 212. 
Perid. double; columell 0 ...... weeee DIDERMA. 213. 
Perid. single, scaly; col. distinct....... Cronium. 214. 
Perid. single, scaly; col. 0....... ... PHysarum. 215. 
Perid. single, membranous; col. distinct. LEaANGi1um. 216. 
Perid. single, membranous; col. 0 ... Leocarrus. 217. 
D. Peridiwm thin, pedicelled or regular, brittle ; fibres 
exserted, springing elastically from the base. ‘Trichiadew. 
Perid. bursting; fibres ascending in 
an irregular mass from the bottom’....... TRicHra. 218. 
Perid. vanishing, leaving a saucer ; 
Jibres rising elastically, falling off ........ ARCYRIA. 219. 
E. Peridium thin, pedicelled, regular, becoming flocklike, 
networked. Cribarideze. 
Perid. becoming netlike at top ....... CRIBARIA. 220. 
Perid. becoming netlike throughout.. Dicrypium. 221. 
F. Peridium thin, single pedicelled, vanishing away ; fibres 
free, in network, perforated by the stem. Stemonitidee. 
Perid. globular or long ........... STEMONITIS, 222. 
G. Peridium thin, single, operculated ; fibres 0 or free and 
falling off with the sporidia. Crateridee. 
Peridium pedicelled ; flocct many ... CRATERIUM. 223. 
Peridium sessile; flocct 0 .....++++++ PYXIDIUM. 224, 
H. Peridium crustlike, fibrous, single; sporidia naked, 
conglobated. Onygenidee. 
Perid. globular; pedicells fibrous ..... ONYGENA, 225. 
I. Peridium leatherlike, double, outer peridium starlike, 
the inner projectile; sporidia naked, conglobated. Sphero- 
bolidez. 
Perid. globular, sessile .......... SPHEROBOLUS. 226, 
