968 The North American Geasters. [ October, 
tudinally rimose, so as to appear white-vittate ; inner peridium 
globose or depressed globose, the mouth determinate, 
Outer peridium vaulted at the base; the segments 6-9, regu- 
lar, long acuminate, the inferior side subglabrous, alutaceous; 
the vitte simple, linear, somewhat parallel, 14—34 of an inch in 
diameter ; spores .0030-.0035™™ | 
11. G. saccatus Fr—Outer peridium saccate; inner peridium 
: globose or depressed glo- 
bose, the mouth determi- 
nate (Fig. 9). 
The outer peridium has 
a roe-shaped base inclosing 
the inner as ina cup; me 
outer cuticle has a leathery 
softness as well as color; 
segments 6-9, from a 
rather broad base tapering 
to a long and narrow point, 
more or less erected or inflexed in dryness. Inner peridium pal- 
lid or brownish, 14-34 of an-inch in diameter ; spores 0030- 
j o o ae 
12. G. lageneformis Vitt.—Inner peridium ovoid, the mouth 
determinate ; spores smooth (Fig. 
10). i 
Segments of the outer peri 
ium 6-9, nearly equal, ovate, 
acuminate, the inner mess" 
ceding. Inner peridium sie 
brownish, 14 an inch oF gee 
diameter ; spores ,0030-.0035 
5. DENTATI. 
Outer peridium multifid, the 5° 
ments revolute ; inner peridium sessile, the mouth dentate. | 
13. G. rufescens Pers—Inner peridium subovoid, the m 
determinate (Fig. 1 I). : 
Exterior peridium firm persistent, at first saccate, at length 3 
resolute. Exceedingly variable in size; a rufous color vi 
in the flesh of the segments and the inner peridium; SP? 
-0040-.0045™"™- 
