TRICHOLOMA. 219 



almost glabrous, whitish, (striate with smoky fibrils, stuffed, 

 base thickened; spores elliptic-oblong, 10 x 4-5 fx. 



Agaricus melaleiicus, Peisoon, Syn., p. 355; Cke., Ildbk., 

 p. 42; Cke., Illustr., pi. 119. 



On the ground in woods, &c. 



Distiuiiuished by the sooty black pihus, thin flesh, and 

 white gills. The smaller forms resemble T. oreinum in 

 general appearance, the latter is however readily separated 

 by the whitish squamnles at tlie apex of the stem. 



Stem stuffed, then hollow, rii:id and fr;igile, elastic when 

 young, 2-3 in. long, 2-3 lines thick (sometimes more), base 

 somewhat incrassated ; naked (not pulverulent), but fibril- 

 losely striate, whitish, striae darker. I 'ileus fl»'shy, soft, 

 convex then expanded, obsoletely umbonate, 11—3 in. broad, 

 even, glabrous, usually sooty-blackish when moist, then 

 livid brown, becoming pale when dry ; gills emarginate, 

 adnexed, crowded, horizontal, straight (not arcuately falcate 

 as in A. arcuatus), broad, more or less ventricose, quite entire, 

 white. Flesh soft, wliit*.-, not hygroplia ous, not yellounsh 

 as in A. arcuatus. There are several remarkable varieties : 

 (1) adstringens, Pers., pileus rigid, gill> becoming tinged 

 flesh-colour; (2) polioleuca, stem short, firm, apex pruinose, 

 pileus livid grey, gills dingy white; (3) porpliyroleuca, firm, 

 pileus rufescent, stem solid, fibrillose. (Fries.) 



Var. polioleucus, Fr. ; Cke. lUnstr., pi. 957. 



About the size of the typical form ; pileus obtusely 

 umbonate, livid grey ; stem almost equal, apex pruinose 

 with white meal; gills whitish; spores elliptical, 10 x 5 /a. 



Var. porphyroleucus, Fr., Cke., Illustr., pi. 119b. 



Not half the size of the typical ftrm; firm; pileus 

 fleshy, umbo darker and evanescent, stem solid, fibrillose; 

 gills white. 



Tricholoma grammopodium. Bull. 

 Pileus 3-6 in. across, disc thickish, margin thin, flesh- 

 coloured when moist, white when dry, soft, fragile ; cam- 

 panulate then convex, obtusely uml)onate, even, glabrous, 

 pellicle moist in rainy weather but not viscid, brownish or 

 livid when moist, whitish when dry ; sometimes entirely 

 white ; gills adnate with a sinus, or emarginate, narrowed 



