136 BRITISH FUNGI 



M. colicvrens. — Cap about i in. across, campanulate, even, 

 smooth, cinnamon or tawny-umber, then pale ; gills very broad, 

 white, then pallid ; stem shining, bay upwards, tufted at the base, 

 4-5 in. long. 



In woods amongst leaves ; also on wood. 



M. psammicola. — Smell strong, but not nitrous. Cap about I in. 



across, almost hemispherical, brown, striate ; gills white ; stem up 



1 f in. long, whitisl 



Among moss, etc. 



M. herkeleyi (PI. XI, fig. 2). — Campanulate, then expanded, 

 slightly umbonate, striate, dingy brown, paler when dry, i|-3 in. 

 across ; gills very deeply cut out behind, tinged pm-ple ; stem 

 3-5 in. long, tinged purple. 



Our largest Mycena, known by the gills being so deeply cut out 

 near the stem. 



On rotten wood. 



M. excisa. — Cap convex, wrinkled, slightly umbonate, brownish, 

 about I in. across ; gills cut out behind, broad in front (near the 

 margin) ; stem grey. Tough. 



On pine and other trunks. 



M. riigosa (PI. XI, fig. 9). — Campanulate, then expanded, tough, 

 dry, irregularly wrinkled with raised ribs, but not striate, grey 

 with a tinge of olive, pale when dry, 1-2 in. across ; gills greyish 

 white, connected by veins ; stem tough, often flattened, base 

 rooting, fibrillose. 



On or near stumps, trunks, etc. 



M. galcriculata. — Conical, then campanulate, then expanded and 

 umbonate, dry, striate up to the umbo, livid brownish, greyish, 

 etc. ; gills connected by veins, white, then pinkish ; stem polished, 

 pallid. Usually tufted. 



Differs from M. rugosa in the white gills changing to pink, and 

 in its tufted habit of growth. 



On fallen trunks and branches. 



var. calopus. — Differs from the typical form in the orange-brown 

 stem. Tufted. 



M. tenuis. — Pure white. Cap about | in. across, In-ittle, cam- 

 panulate, then convex, striate ; gills distant ; stem 2-3 in. long, 

 smooth, pellucid. 



Differs from M. gypsea in the l)ase of the stem not l)eing strigose, 

 or liristling with hair-like hyplia-. 



In damp woods. 



M prolifera. — Cap about J in. across, campanulate, tlien ex- 

 panded, more or less umbonate, edge coarsety striate, yellowish or 

 brownish tan ; gills pallid ; stem about 3 in. long, shining, rooting. 



Densely tufted ; stem often proliferous. 



On rotten wood and on the ground. 



