NEW SPECIES OF FUNGI. 7 



Readily distinguished from its allies by its white color. Leplonia 

 assularum B. & C. differs in having an umbonate virgate pileus with 

 n dark center. Nolanea delicatulus is a more slender, delicate plant 

 with :i smoother pileus and not at all umbilicate. 



Psilocybe castanella, 



Pileus thin, at first convex or subcorneal, then expanded or slightly 

 depressed, glabrous, hygrophanous, chestnut-colored or umber-brown 

 and striatulate on the margin when moist, pale-alutaceous when dry, 

 flesh a little paler than the surface of the pileus ; lamellae close, 

 adnate or slightly rounded behind, at first pale-brown, then purplish- 

 brown ; stem equal, flexuous, hollow or stuffed with a whitish pith, 

 slightly silky-fibrillose, brownish or subrufescent with a white myce- 

 lium ;it the base ; spores purplish-brown, .0003 to .00032 in. long, 

 .00016 to .0002 in. broad. 



Plant gregarious or subeaespitose, 1 to 2 in. high, pileus 4 to 8 

 lines broad, stem .5 to 1 line thick. 



Rich grassy ground by roadsides. Sandlake. June. 



The species appears to be closely allied to Agaricus squalens, 

 which may be distinguished by its lurid color, decurrent lamellee 

 and ferruginous-brown spores. Moreover its habitat is unlike that 

 of our plant. In very wet weather both the pileus and lamellae 

 sometimes have a watery-brown appearance, and then the striatums 

 of the former sometimes extend to the disk, which is rarely slightly 

 umbonate. In drying, the moisture first disappears from the center 

 of the pileus. The young pileus is usually chestnut-colored, and its 

 margin and the stem are adorned with a few whitish fibrils. 



Psilocybe fuscofulva. 



Pileus thin, convex or subcampanulate, subumbonate, glabrous, 

 hygrophanous, dark watery-brown and striatulate on the margin 

 when moist, subochraceous when dry ; lamellae rather broad, mod- 

 erately close, adnate, subventricose, purplish-brown ; stem slender, 

 flexuous, stuffed, slightly silky, reddish-brown ; spores purplish- 

 brown, .0004 to .0005 in. long, .00025 to .0003 in. broad. 



Plant 1.5 to 2.5 in. high, pileus 6 to 12 lines broad, stem 1 to 2 

 lines thick. 



Among sphagnum. Karner. October. 



The species is related to Agaricus atrobrunneus, but its smaller size 

 and differently colored lamellae will serve to distinguish it. 



