Tricholoma. 19 



under cuticle ; g. crowded, spotted reddish ; s. 5 8 cm. whitish, 

 squamulose ; sp. 5 6 x 4. 



russula, Schaeff. P. 68 cm. exp. viscid, rosy red, granulated ; 

 g. subdecurrent ; s. 3 5 cm. rosy, apex squamulose ; sp. 10x5. 



frumentaceum, Bull. P. 5 10 cm. exp. viscid, glabrous, pallid, 

 streaked or stained reddish ; g. crowded ; s. 5 8 cm. solid, fibrillose, 

 white, variegated red ; sp. 5 x 3'5. 



II. GENUINA. Pellicle not viscid, torn into scales, or 

 fibrillose. 



* Gills not changing colour, neither spotted with rufous 

 nor black. 



rutilans, Schaeff. P. 6 14 cm. exp. coated with purplish down, 

 flesh yellow ; g. yellow, edge downy, orange ; s. 5 8 cm. yellow with 

 purple squamules ; sp. subgl. 5 6. 



variegatum, Scop. P. 5 10 cm. exp. yellow with purplish squa- 

 mules ; g. pale yellow, edge entire not darker coloured ; s. 5 8 cm. 

 pale yellow, more or less variegated with red ; sp. 5 7 x 4 5. 



Differs from T. rutilans in edge of gills. 



[albofimbriatum, Trog. P. exp. obtusely umb. fibrillose, scaly 

 towards edge, brownish; g. sinuate, closely crowded, yellow then 

 rufescent, edge white-fimbriate ; s. yellow-rufesrent. 



[aestuans, Fr. P. conico-exp. umb. with fugacious longitudinal 

 fibrils, yellow-rufescent ; g. very broad, yellow then pallid; s. equal, 

 glabrous, striate. 



centurio, Kalchb. P. campan. strongly umb. edge incurved then 

 spreading and wavy, fuscous then livid ; g. deeply emarginate, almost 

 free, pallid ; s. ventricose, stout, white. 



luridum, Fr. P. 3 5 cm. exp. rather wavy, dry, glabrous, then 

 torn into livid squamules, yellowish-grey ; g. broad, crowded ; s. 

 5 8 cm. glabrous, white ; sp. 5 6 x 3 4. 



Differs from T. saponaceum in persistently white flesh. 



guttatum, Schaeff. P. 5 12 cm. exp. cinnamon or with a pink 

 tinge, dry, granulose or floccose, margin remotely sulcate; g. with 

 decurrent line down stem, crowded ; s. 5 8 cm., white, mealy ; sp. 



Differs from T. tigrinum in white gills and sulcate margin of 

 pileus. 



[goniospermum, Bres. P. fleshy, compact, hemispher. tinged 

 fuscous or livid yellowish ; g. much crowded, smoky-grey or lilac 

 then yellowish ; s. solid, whitish or lilac above, base brownish ; sp. 

 more or less cruciform rarely subtriangular, 8 10 x 5 7. 



22 



