PL cell. aph. 9. G ASTEROMY CEiE. 
565 
C. Peridium thin , pedicelled or regular , brittle; fibres 
! rowing from the base, enclosed; sporidia conglobated . 
^hysarideae. 
Peridium double; columell distinct . . . Didymium. 212. 
Perid. double ; columell 0 Diderma. 213. 
Perid . single, scaly; col. distinct Cionium. 214. 
Perid. single, scaly; col. 0 . . Physarum. 215. 
Perid. single, membranous; col. distinct Leangium. 216. 
Perid . single, membranous; col. 0 . . . Leocarpus. 217. 
D. Peridium thin , pedicelled or regular , brittle ; fibres 
exserted , springing elastically from the base. Trichiadese. 
Perid. bursting; fibres ascending in 
an irregular mass from the bottom Trichia. 218. 
Perid. vanishing, leaving a saucer; 
fibres rising elastically, falling off Arcyrxa. 219. 
E. Peridium thin , pedicelled, regular , becoming flocklike , 
networked . Cribarideae. 
Perid . becoming netlike at top ....... Crxbaria. 220. 
Perid. becoming netlike throughout . . Dictydium. 221. 
F. Peridium thin , single pedicelled, vanishing away ; fibres 
free , in network , perforated by the stem . Stemonitideae. 
Perid. globular or long ........... Stemonitis. 222. 
G. Peridium thin, single , operculated ; fibres 0 or free and 
falling off with the sporidia. Craterideae. 
Peridium pedicelled ; flood many . Craterium. 223. 
Peridium sessile; flocci 0 Pyxidium. 224. 
H. Peridium crustlike , fibrous, single ; sporidia naked 9 
conglobated. Onygenideae. 
Perid. globular; pedicells fibi'ous Onygena, 225. 
I. Peridium leatherlike, double , outer peridium starlike, 
the inner projectile ; sporidia naked , conglobated. Sphaero- 
bolideae. 
Perid. globular, sessile Sphjerobolus. 226. 
