CLASSIFICATION 133 



ish, about | in. across ; gills adnate, white ; stem 2-3 in. long, 

 silky, slightly rooting. Easily known by the pruinose cap. 

 Among moss and heather. 



**** Cap grey, brownish or blue-black. 



M. corticola. — Cap 2-4 lines across, deeply striate, colour variable, 

 blackish, bluish, brownish or grey ; stem up to \ in. long, incurved ; 

 gills broad. 



Known by growing on bark of trees, among moss, lichens, etc. 



M. collariata. — Cap |— | in. across, bell-shaped, then expanded, 

 l:)rovvnish, disc darkest ; gills attached to a collar round the stem, 

 which is about i| in. long. 



Known by the attachment of the gills. 



Among grass in woods. 



M. vitilis. — Cap 3-4 lines across, conical, then expanded, papillate, 

 striate, brownish or greyish white, then pale ; gills greyish white ; 

 stem 3-6 in. long, very slender, shining, rooting. 



Known by the long, slender stem and striate cap. 



Among leaves in damp places. 



M. debilis. — Cap about j in. across, campanulate, then convex, 

 striate, brownish ; gills broadly adnate, whitish ; stem 1-2 in. 

 long, very slender, whitish, not rooting. 



M. collariata differs in the attachment of the gills. 



On the ground among moss. 



M. mirabilis. — Cap about | in. across, campanulate, finely striate, 

 umbonate, pale bluish grey, umbo darker ; gills distant, white, 

 edge darker ; stem i|-2 in. long, greyish. 



Differs from M. iris in the umbonate cap. 



On fir trunks among moss, etc. 



M. iris. — Cap |-§ in. across, bright sky-blue, tomentose, then 

 brownish with blue fibrils ; gills tinged grey ; stem bluish below. 

 On fir stumps. 



M. (dopes (PI. XI, fig. 6).— Cap about \ in. across, campanulate, 

 then almost flat, striate, brownish grey, greyish or whitish ; gills 

 white ; stem 3-4 in. long, very weak and slender, ending in a mass 

 of fibrils. 



Distinguished by the long, slender, rooting stem, fibrillose at the 

 base. 



In woods among dead leaves. 



M. plumbea. — Cap thin, convex, then plane, obtuse, grooved, 

 lead-colour, powdered with white meal, \-\ in. across ; gills adnate, 

 colour of the cap ; stem greyish, powdery, apex pale, base strigose, 

 3-4 in. long. 



Cap very thin, bluish grey ; stem very fragile, equal. Smell none. 



In mossy pastures^ etc. 



