ROSV-Sl'UkUlJ AGARICS. 



l:;'.t 



varies considerably in size and appearance. It is 7-15 i. in. lii^ii, ttu- 

 cap 5 10 cm. broad, and tlu- stem 6-12 mm. in thickness. It occurs 

 on tlie jzround trom underground roots or rottt-n wood, or grows on 

 deca>'ing stumps, logs, rtc, from spring until late autumn. Some- 

 times it is found growing in sawdust. 



The pileus is tleshy, bell-shapcJ, iIkii con\f.\, and becoming 

 e.\panded, the surface usually smooth, but showing radiating fibrils, 

 grayisli brow 11, or sometimes sooty, sometimes more or less scaly. 

 Thr Kills aic not crowded, broad, Uw from the stem, white, then 



Fuji KK 133. — Pluteus tomentosulsus. Cap and stem entirely white, gills flesh 

 color, stem furrowed and tomentose (natural size). Copyright 1900. 



becoming tlesh color with the maturity' of the spores. One \er)- 

 characteristic feature of the plant is the presence of cystidia in the 

 h\'menium on the gills. These are stout, colorless, elliptical, thick- 

 walled, cUid terminate in two or three blunt, short prongs. 



The stem is nearly equal, solid, the color much the same as that 

 of the pileus, but often paler abo\e, smooth or sometimes scaly. 



In some forms the plant is entirely white, except the gills. In 

 addition to the white forms occurring in the woods, I have found them 

 in an old abandoned cement mine growing on wood props. 



