SPECIES WITH EVEN MOUTHS.—NON-HIGIOAE. 
(See remarks on page 14 under head of “Species with sulcate mouths.”) 
The even-mouthed species can be divided into three subsections : 
Exoperidium recurved (not fornicate), (see following). 
Exoperidium fornicate,* (mostly quadrifid), (see p. 29). 
Exoperidium saccate, sessile, (see p. 33). 
EXOPERIDIUM RECURVED, (not fornicate.) 
NON-RIGIDAE, MOUTH EVEN. 
The mycelial layer in this subsection is often disposed to separate either en¬ 
tirely or partiadherent (particularly in limbatus and minimus) but is never truly 
fornicate as in the following subsection. 
T KEY TO THE SPECIES. 
Large species, 
Unexpanded plant globose, 
reddish bro\Mi, sessile or pedunculate,. (11) rufescens. 
black, pedunculate,.(12) limbatus. 
Unexpanded plant acute, plant reddish brown, .(13) triplex. 
Small species, 
pedicellate, not hygroscopic, .(14) minimus. 
subsessile, subhygroscopic,. (15) arenarius. 
)1—GEASTER RUFESCENS 
Unexpanded plant globose. Exoperidium recurved, cut to 
usually eight segments to about the middle. Mycelial layer, adnate 
with its adhering dirt or sometimes entirely peeled off. Fleshy 
layer mostly adnate, thick , porous, cracked and having the appearance 
of rough reddish leather. Inner peridium sessile or usually with a 
short thick pedicel, somewhat tapering toward the base. Mouth in- 
Fig. 38. Geaster rufescens. Fig. 39. Geaster rufescens. 
(*) The word fornicate meaning arched, as applied to a Geaster means arched <ivt> the cup 
thape mijcdial layer. 
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