388 MYCENA 



1235. M. ammoniaca Fr. Cke. lUus. no. 235, t. 238, upper figs. 



Ammoniaca, ammoniacal. 



P. 1-5-2 cm., fuscous, becoming blackish, varying cinereous, disc 

 fuscous blackish, paler round the striate margin, submembranaceous, 

 acutely conical, papillate, then campanulate, naked, discoid, opaque. 

 St. 2-5-5 cm. x 1-2 mm., whitish, slightly firm, equal, polished, dry, 

 smooth; base rooting, strigose. Gills whitish, or grey, edge whitish, 

 adnate, linear, distant. Flesh greyish in the p., becoming whitish, thin 

 at the margin. Spores white, elliptical, 611 x 4-7 ju, often 1-2- 

 guttulate. Cystidia hyaline, flask-shaped, ventricose at the base ; apex 

 acute, obtuse or subglobose, 40-55 x 15-18 x 3-7 /x at apex. Smell 

 strong, alkaline. In troops on coniferous needles, and amongst short 

 grass. July Nov. Common, (v.v.) 



1236. M. metata Fr. (= Mycena paupercula Berk. sec. Quel.) 



Metata, conical. 



P. 1-2 cm., cinereous and slightly striate when moist, opaque, whitish, 

 and somewhat silky in appearance when dry, submembranaceous, 

 hemispherico-campanulate, obtuse, then plane, disc papillate or 

 somewhat umbilicate, very hygrophanous. St. 5-7-5 cm. x 1-2 mm., 

 white, becoming cinereous, rarely yellowish, or flesh colour, soft-flaccid, 

 equal, smooth, base white fibrillose. Gills whitish, or yellowish grey, 

 adnate, linear, subdistant. Spores white, elliptical, 6-8 x 4-5/A, with 

 a large central gutta. Cystidia "obovate or pyriform, 12-19/u, across, 

 set with setulose warts" Lange; "spinulose, 30 x 12-15/>i" Rick.; 

 "conical, ventricose, 20-50 x 12-16/u," v. Hoehnel. Smell faintly 

 alkaline. In pastures, and amongst short grass. Sept. Nov. Com- 

 mon, (v.v.) 



1237. M. plicosa Fr. Fr. Icon. t. 81, fig. 4. Plicosa, folded. 

 P. 1-5-3 cm., fuscous cinereous, opaque when dry, membranaceous, 



fragile, campanulate, then expanded, broadly and obtusely um- 

 bonate, deeply lineato-sulcate, plicate with the distant furrows, often 

 split. St. 2-5 cm. x 2-3 mm., grey, then fuscous, rigid but fragile, 

 equal, smooth; base abrupt, white villose. Gills grey, at length whitish 

 pruinose, adnate, thick, distant, connected by veins Spores oblong- 

 elliptical, 9-1 1 x 4 5 fi, " minutely punctate " Quel. Cystidia "on edge 

 of gill clavate, 40-45 x 12-18/x, with finger-like appendages" Rick. 

 On bare soil in woods. Sept. Oct. Uncommon, (v.v.) 



1238. ML cinerea Massee & Crossl. Cinerea, ash colour. 

 Entirely grey. P. 1-5-2 cm., submembranaceous, subgibbous, or 



obtuse, soon expanded, paler and silky when dry; margin striate. 

 St. 5-7 cm. x 2 mm., cylindrical, smooth; base white, downy. Gills 

 adnate, subdistant, edge pale, mealy with the spores. Flesh greyish, 



