566 
9. GASTEROMYCEiE. PL cell aph. 
K. Peridium leather like, double; the inner fixed; sporidia 
fioccular , conglomerated . Lycoperdeae. 
Perid. outer warty, rooting ; 
spor. collected in heaps Scleroderma. 227- 
Perid . outer warty, rootless ; 
spor . collected in heaps Hypogasum. 228. 
Perid . outer adnate, splitting in lobes ; 
spor. pedicelled Bovista. 229. 
Perid . outer, falling off like bran ; 
spor . scattered, crowded Lycoperdon. 230. 
Perid. outer leatherlike, stellate ; 
inner one-pedicelled or sessile; 
mouth 1; spor. pedicelled Geastrum. 231. 
Perid. outer leatherlike, stellate; 
inner many -pedicelled ; mouths 
many; spor. pedicelled, from the first .... Polystoma. 1232. 
L. Peridium single , leatherlike , mouth cartilaginous , cir- 
cular ; sporidia conglobated. Tulostomideee. 
Peridium globular Tulostoma. 233. 
M. Peridium single , thin , membranaceous , containing pe- 
ridiola, filled with sporidia . Polyangideae. 
Peridiola ovate Polyangium. 234. 
N. Peridium thick , leatherlike , containing peridiola filled 
with sporidia. Cyathidese. 
Peridium cuplike, open Cyathus. 235. 
A. Spumarideje. Peridium single or double, sessile, 
spread out irregularly, becoming fibrous or skinny, inside 
smooth or lamellar, membranaceous ; columella 0 ; sporidia 
numerous, scattered or placed in lines between the laminae. 
— Plant at first liquid, afterwards powdery. 
I. 202. EUROTIUM. Link. Purse-mould* 
Peridia membranaceous, nearly globular, innate on a 
jointed stroma. 
Eurotium kerbariorum . Herbarists > purse-mould . 
Peridia dotlike, yellow ; stroma whitish. 
