392 MYCENA 



1249. M. plumbea Fr. (= Omphalia plumbea (Fr.) Rick.) 



Plumbea, lead colour. 



P. 1-3 cm., cinereous lead colour, covered with a white pruina, some- 

 times bluish ash colour, membranaceous, convex, then plane, obtuse, 

 sulcate. St. 7-10 cm. x 2 mm., becoming cinereous, equal, fragile, 

 pulverulent, apex hyaline, base white strigose. Gills concolorous, 

 adnate, horizontal. Flesh whitish, very thin at the margin. Spores 

 white, elliptical, 10-11 x 5-6 p,, 2-multi-guttulate. Mossy pastures, 

 and amongst leaves. Sept. Nov. Uncommon, (v.v.) 



1250. M. debilis Fr. Quel. Jur. et Vosg. i, t. 14, fig. 6. 



Debilis, weak. 



P. 4-6 mm., whitish livid, or somewhat flesh colour, becoming fuscous, 

 withered and corrugated when dry, membranaceous, very thin, cam- 

 panulate, then convex, obtuse, striate when moist, even when dry, 

 smooth. St. 5-10 cm. x 1 mm., concolorous, capillary-filiform, weak, 

 lax, base fibrillose. Gills whitish, or concolorous, broadly adnate, rather 

 broad, subdistant. Spores white, elliptical, 10-12 x 5/z. Cystidia 

 "thin, lanceolate, 60-75 x 9-12/u,, much projecting and making the 

 gills appear rough" Rick. Amongst dead leaves in woods, and hedge- 

 rows. Sept. Nov. Not uncommon, (v.v.) 



1251. M. vitilis Fr. Cke. Illus. no. 240, 1. 189, fig. 2. Vitilis, plaited. 

 P. 6-10 mm., fuscous, or livid, becoming pale, or whitish, membrana- 

 ceous, conical, then campanulate, papillate, striate to the middle, 

 dry, smooth. St. 7-15 cm. x 1-2 mm., livid, filiform, rooted, tense and 

 straight, rigid, tough, easily flexile, smooth, shining. Gills whitish, 

 or grey, edge becoming whitish, attenuato-adnate, ascending, linear, 

 thin. Flesh white, very thin at the margin. Spores white, broadly 

 elliptical, apiculate at base, 9-12 x 5-7 /A. Cystidia "very like those 

 of Mycena polygramma, free portion hair-shaped, c. 10/x, long, 2p, 

 broad, basal part slightly thickened" Lange. Amongst dead leaves 

 in deciduous woods. Sept. Feb. Common, (v.v.) 



var. amsegetes Fr. Amsegetes, field by the roadside. 



Differs from the type in the obsoletely umbonate p., and the shorter, 

 and thicker st. Meadows, and roadsides. 



1252. M. collariata Fr. Collariata, possessing a collar. 

 P. 1-2 cm., fuscous, becoming pale, often greyish white, becoming 



fuscous only at the disc, membranaceous, campanulate, then convex, 

 subumbonate, striate, rigid when dry, smooth. St. 5 cm. x 1-2 mm., 

 grey, becoming pale, filiform, tough, dry, smooth, slightly striate under 

 a lens. Gills hoary-whitish, or obsoletely flesh colour, adnate, joined in 

 a collar behind, thin, crowded. Spores white, "elliptical, 8-10 x 



