422 PSATHYRELLA. OMPHALIA 



when dry, hygrophanous, membranaceous, campanulate, obtuse, 

 slightly striate, slightly wrinkled and without striae when dry, 

 sprinkled with shining atoms. St. 4-7 cm. x 3-4 mm., white, equal, 

 lax, fragile, slightly bent, apex white pulverulent. Gills whitish, then 

 cinereous-blackish, adnate, broad, ventricose, slightly distant. Flesh 

 pallid, thin. Spores black, elliptical, 11-15 x 6-8 ^t. Cystidia 

 "fusiform, 40-50 x 8-10/*" Rick. Solitary, or gregarious. Woods, 

 pastures, roadsides, and hedgerows. May Dec. Common, (v.v.) 



var. expolita Fr. Expolita, polished. 



Differs from the type in its smaller size, conical p., and undulate, 

 smooth st. Woods, pastures and hedgerows. Sept. Oct. Not un- 

 common, (v.v.) 



1358. P. crenata (Lasch) Fr. (= Coprinus crenatus (Lasch) Eick.) 

 Cke. Illus. no. 643, t. 847. Crenata, notched. 



P. 1-3 cm., ochraceous, or rufescent, then pale, hygrophanous, mem- 

 branaceous, hemispherical, sulcate, atomate, crenate at the margin. 

 St. 4-10 cm. x 2-4 mm., whitish, or brownish, fragile, equal, base 

 thickened and villose, striate and mealy above. Gills yellowish fuscous, 

 then blackish, adnate, sub ventricose. Flesh yellowish in the p., thin. 

 Spores brownish black, elliptical, 9-12 x Q/JL. Cystidia "bottle- 

 shaped, 50-150 x 22-33/i" Rick. Woods, pastures, roadsides, and 

 amongst beech leaves. Sept. Nov. Not uncommon, (v.v.) 



1359. P. disseminata (Pers.) Fr. (= Coprinus disseminatus (Pers.) 

 Quel.) Boud. Icon. t. 140. Disseminata, spread abroad. 



P. 1-2 cm., whitish, or yellowish, then becoming cinereous, commonly 

 livid, disc becoming yellow, membranaceous, oval, then campanulate 

 or convex, scurfy, then becoming smooth, deeply striate, sulcate. St. 

 2-56 cm. x 2 mm., white, fragile, often curved, lax, somewhat 

 flexuose, slightly scurfy, then smooth, arising from a byssoid, white 

 mycelium. Gills whitish, then blackish, adnate, linear, 2 mm. broad. 

 Flesh white, yellowish at the disc, very thin. Spores black, pip-shaped, 

 9-10 x 5-6 /i. Cystidia " cylindrical- vesiculose, 60-75 x 8-12 /A" Rick. 

 Densely crowded, or caespitose. Old stumps, and bare ground. April 

 Nov. Common, (v.v.) 



**Gills decurrent. 



Spores white. 

 Omphalia (Pers.) Fr. 

 (o/i<aXo9, the navel.) 



Pileus fleshy, or submembranaceous, often umbilicate. Stem 

 central, cartilaginous. Gills decurrent. Spores white, rarely yellowish, 

 elliptical, reniform, pip-shaped, boat-shaped, subglobose, or oblong 



