58 Journal of Mycology [Vol. IJ 



i6. PSATHYRELLA BARTHOLOMAEI Peck, Bull. 

 ToRR. Club, 1895. Sylloge, XIV, 163. 



Pileus thin, subconic or convex, glabrous, striatulate around 

 the margin, pale brown. Stipe slender, flexuous hollow orna- 

 mented with a few gravish fibrils, pale brown. Lamellae broad, 

 close, adnate. browni^sh then black ; spores elliptic 10-13 x 5-7 mic. 



Growing on the ground in shaded places. Kansas, Barthoi- 

 omezv. Pileus 1.5-3 mic. in diameter; stipe 3-4 cm. long, 2 mm. 

 thick. 



b. Lamellae narrow, linear. 



17. PSATHYRELLA HIASCENS Fries, Syst. :\Iyc. I, 

 1 82 1. Cooke, Illustr. 635. 



Pileus membranaceous, campanulate, glabrous, sulcate spht- 

 tincr and revolute, livid then yellowish. Stipe straight, rigid, fra- 

 gil? crlabrou'^, white. Lamellae linear, narrow, adnate, subdistant, 

 pallid" becoming black; spores elliptic, 10-12 x 7-9 mic. 



Growing on wet ground in woods. New York, Peck. Pileus 

 2-3 cm in diameter; the stipe 6-10 cm. long, 2 mm. thick, having" 

 the habit of some of the Coprini, but the lamellae are dry. 



18. PSATHYRELLA HYDROPHORA Bulliard, Her- 

 BiER Fr. 1791. Cooke, Illustr. 655. 



Pileus membranaceous campanulate then expanded, glabrous 

 rufescent, the margin striatulate and at length revolute. Stipe 

 straight fistulous, white, glabrous, sometimes incurved at the 

 base^ Lamellae narrow, linear, close, adnate, livid-blackening, 

 spores 11-12x7-8 mic. t- , j o^ 



Growing on tlie ground in gardens. New England, Sprague, 

 Pileus 2-3 cm. in diameter: the stipe 7-10 cm. long, 2 mm. thick. 



19. PSATHYRELLA LEUCOSTIGMA Peck, Bull. 

 ToRR. Club, 1895. Sylloge, XIV, 163. 



Pileus submembranaceous, campanulate, striatulate, bluish- 

 white, brown when drv except the whitish center. Stipe slender, 

 flexuous. hollow, white. Lamellae close, alutaceous, then black, 

 the edge whitish; spores elliptic, 13-16x8 mic. 



Growing on wet shaded ground. Kansas, Bartholomew. 

 Pileus 9-14 mm. in diameter; stipe 2-4 cm. long, 2 mm. thick 



20. PSATHYRELLA SUBATRATA Fries, Monogr. II, 

 1863. IcoNKS. Hym. 139. Cooke, Illustr. 633. 



Pileus m;embranaceous, campanulate, obtuse, glabrous, 

 striatulate, rufescent-umber, pale rufous when dry. Stipe fistu- 

 lous, straight, glabrous, whitish or pallid. Lamellae narrow, lin- 

 ear, close.'^adnate, sooty-black; spores 12-15 x 6-8 mic. 



Growing in rich soil in grassy grounds. Pacific Coast Cat. 

 Pileous 3-6 c^Ti. in diameter ; the stipe 8-12 cm. long, 2-3 mm thick. 



