PSATHYRA. PSATHYRELLA 419 



curved, smooth. Gills pallid, then dark fuscous, adnate, broad, plane. 

 Flesh grey, very thin at the margin. Spores lilac, "subcylindrical, 

 7-9 x 4-5 p, smooth, transparent brown. Cystidia on edge of gill 

 fusiform, 40-45 x 10-13ju, " Rick. Gregarious. Oak chips, and damp 

 shady ground. Sept. Dec. Rare. 



1347. P. microrhiza (Lasch) Fr. Cke. Illus. no. 622, t. 596, fig. A. 



/zitf/oo?, small; pi^a, root. 



P. -5-3 cm., ochraceous, or rufous brown, becoming pale, membrana- 

 ceous, campanulate, dry, shining with atoms, at first yellow pilose. 

 St. 4-10 cm. x 2-3 mm., whitish, fragile, rooting, silky. Gills pallid, 

 then black brown, adnexed, narrow, crowded. Spores/wscows, "broadly 

 elliptical, 10-12 x 6-7 p, smooth, transparent brown. Cystidia lan- 

 ceolate, 45-50 x 10-12 fi, blunt" Rick. Gregarious. Bare soil in 

 gardens. Sept. Rare. 

 P. urticaecola B. & Br. = Coprinus urticaecola (B. & Br.) Buller. 



Spores black, or blackish. 



Psathyrella Fr. 

 (Diminutive of Psathyra.) 



Pileus fleshy, or submembranaceous, regular; margin straight, at 

 first adpressed to the stem. Stem central, confluent with the pileus. 

 Gills adnate, or free. Spores black, or fuscous black, elliptical, or 

 oval; smooth; with an apical germ-pore. Cystidia present. Growing 

 on the ground, or on wood ; solitary, or caespitose. 



*St. tense and straight, smooth. 



1348. P. subatrata (Batsch) Fr. Fr. Icon. t. 139, fig. 1. 



Sub, somewhat; atrata, clothed in black. 



P. 2-5-5 cm., umber-rufescent, fuliginous, or somewhat olivaceous, 

 pallid rufescent when dry, membranaceous, campanulate, 2-5 cm. high, 

 then expanded, obtuse, or somewhat umbonate, smooth, slightly 

 striate round the margin. St. 2-5-12-5 cm. x 24 mm., becoming pale 

 white, tense and straight, equal, smooth. Gills fuliginous blackish, 

 almost umber, adnexed in the top of the cone, adnate when the p. is 

 more expanded, linear, usually 2 mm. broad, sometimes ven- 

 tricose, 4 mm. broad. Flesh yellowish white, somewhat fuliginous 

 under the cuticle of the p., thin. Spores fuliginous black, elliptical, 

 14-17 x 7-9 /x. Cystidia "on edge of gill bluntly fusiform, 45-55 x 

 8-15/i" Rick. Taste bitter. Gregarious. Rich pastures, woods, and 

 hedgerows. Sept. Oct. Uncommon, (v.v.) 



1349. P. gracilis Fr. Cke. Illus. no. 635, t. 634. Gracilis, slender. 

 P. 1-4 cm., fuliginous, livid, or pale grey, tan, rosy, or whitish when 



dry, hygrophanous, membranaceous, campanulate, obtuse, smooth, 



272 



