20 Tricholoma. 



[psammopodium, Kalchb. P. obtuse or subumb. dry, with 

 scattered fibrillose squanmles, dusky cinnamon then tawny; g. 

 yellowish ; s. ventricose, colour of p. with darker squamules dowu- 



rimpolitum Lasch. P. exp. flocculose, then broken into scales 

 and subdepr.- g crowded ; s. solid, fibrillose, floccosely scaly above. 



columbetta, Fr. White, here and there spotted with red. P. 

 510 cm. dry, glabrous then fibrillose ; g. subserrulate ; s. 610 cm. 

 stout, solid, striate ; sp. 67 x 45. 



scalpturatum, Fr. P. 58 cm. conical then exp. dingy, tomen- 

 tose then broken up into rufous or umber scales ; g. white then 

 yellowish ; s. 59 cm. whitish, fibrillose ; sp. 67 x 3'5. 



var. argyraceum, Bull. Slender ; p. silvery grey. 



var. chrysites, Jungh. Pale, p. and g. becoming yellowish. 



var. mrescens, Wharton. Yellow-green when bruised. 



These are forms rather than varieties. 



* * Gills rufous or greyish ; edge usually spotted with 

 rufous or black. 



imbricatum, Fr. P. 8 12 cm. exp. obtuse, dry, rufous umber, 

 innately squamulose, margin involute and downy at first ; g. sinuate, 

 crowded ; s. 8 12 cm. solid, paler than p. apex white-pulverulent ; 

 sp. 6x4. 



vaccinum, Fr. P. 7 12 cm. exp. umb. dry, rufous, squamulose, 

 margin at first involute and downy ; g. almost adnate ; s. 7 10 cm. 

 hollow, fibrillose, brownish ; sp. subg. 6 7. 



Differs from T. imbricatum in hollow stem and reddish flesh. 



[polyphyllum, D. C. P. obtuse, irreg. with adpressed fibrillose 

 scales ; rufous umber ; g. white then tinged red ; s. solid, white, 

 squamulose, apex striate. 



immundum, Berk. P. 5 9 cm. greyish, silky-squamulose, stained, 

 margin incurved; g. greyish pink, separating readily from flesh; s. 

 4 6 cm. greyish, fibrillose ; sp. subg. 4 5. Every part blackish 

 when bruised. 



inodermeum, Fr. P. 25 cm. acute then umb. rufous brown, 

 fibrillose and with radiating scales ; g. free, ventricose, white, spotted 

 red when bruised ; s. 7 8 cm. fibrous, white with rufous tinge, apex 

 powdered white ; s. 7 8 x 4. 



[furvum, Fr. P. campan.-exp. wavy, dry, brownish, fibrillosely 

 striate; g. entire, white then greyish ; s. solid, fibrillose. 



unguent atum, Fr. P. exp. umb. grey, viscid, floccosely- squa- 

 mulose ; g. very broad, crowded, whitish ; s. white, solid, fibrillose. 



[gausapatum, Fr. P. bullate, obtuse, wavy, covered with dense 

 superficial fibrils, edge at first incurved and with white wool ; g. 

 adnate, grey ; s. solid, white, fibrillose. 



