North American Fungi. 17 



Growing on the ground in woods. New England, Frost • North 

 Carolina, Curtis ; South Carolina, Ravenel ; Kansas, Cragin; California, 

 Harkness. Inner peridium %-i inch in diameter, the segments- 

 expanded 2-3 inches in breadth. The outer peridium casts off a 

 thick cuticular layer when it expands, and the fleshy layer soon secedes, 

 leaving in the dried specimens commonly nothing but the thin, 

 flaccid fibrillose layer. 



e. Mouth dentate or lacerate. 



10. G. rufescens, Pers. Outer peridium multifid, the segments 

 6-8; inner peridium globose or broadly ovoid, sessile, pallid; mouth 

 little elevated, dentate, the ciliate fringe entirely wanting. Columella 

 subglobose, small ; threads of the capillitium pale brown ; spores 

 globose, even or very minutely warted, 3.5-4.5 mic. in diameter. 



Growing on the ground in pine woods. North Carolina, Schwein- 

 itz ; California, Emory. Inner peridium 1-1^2 inches in diameter, 

 the expanse of the segments 3-4 inches. The inner fleshy layer and 

 also the cuticle seem quite persistent, differing in this respect as well 

 as in the nature of the mouth from G. Jimbriatus, to which it must be 

 closely related. 



11. G. deltcatus, Morg. Outer peridium thin, multifid; the seg- 

 ments 6-10, unequal; inner peridium sessile, depressed-globose, pal- 

 lid to pale brown; the mouth plane, lacerate. Columella cylindric 

 or nearly obsolete ; threads of the capillitium thinner than the spores, 

 hyaline; spores globose, minutely warted, pale brown, 5.5-6.5 mic, 

 in diameter. 



Growing in sandy soil. Nebraska, Chas. E. Bessey ; California, 

 Ellis. Inner peiidium %-% of an inch in diameter, the expanse of 

 the segments an inch or more ; the thin inner layer is somewhat 

 hygrometric ; the mouth is sometimes a mere slit or puncture. 



§2. PELLICULOSI. Peridium ovoid, pointed, the segments acumin- 

 ate at the apex. Mycelium fibrous, proceeding from the base of the 

 peridium, much branched and interwoven with the soil ; cuticle per- 

 sistent, subtomentose, often splitting lengthwise in drying. 



III. Saccati. Outer peridium multifid, the segments reflexed with 

 the base saccate, or sometimes revolute with the base plane ; inner 

 peridium sessile or subpedicellate. 



f. Mouth sulcate-plicate. 



12. G. striatus, DC. Outer peridium multifid, the segments 

 7-10; inner peridium globose, sessile or subpedicellate, pale to dark 



