972 m w STORK stai B Mi si:i \i 



forming dense tufts. In such cases the caps are apt to be- 

 Irregnlar and the sinus narrower toward the base. They occur 

 In August and September. 



Hypholoma aggregatum sericeum Pk. 



SILKY TUFTED BYPHOLOMA 



ri.Ai ED 79, FIG. 8^14 



Pileus llcsliv. thin, oval when young, soon becoming campanu- 

 late or convex, silky fibrillose, white becoming grayish white 

 with age, lleSh white, taste mild; lamellae thin, close, adnate or 

 slight ly rounded behind, concealed by the veil in the young plant 

 and then white, brown with a purplish tint when mature; stem 

 long, tlexuous, hollow, striate at the top, white; spores purplish- 

 brown, elliptic, .0003 of an inch long, .00016 broad. 



The silky tufted hypholoma is so closely related to the tufted 

 hypholoma, Hypholoma aggregatum Pk., that it is 

 considered a mere variety of it. It differs from it in its larger 

 . in the entire absence of scales or spots from its cap and in 

 the broader attachment of its gills to the stem. It is also re- 

 lated to tin* Kuropean forest hypholoma, Hypholoma 

 silvest re Gill., from which it diiTers in the color of the cap 

 and in the absence from the cap of the broad brown or blackish 

 scales of that species. It has some points of resemblance to 

 Candolle's hypholoma, H. candolleanum, and to the dingy 

 white hypholoma, H. 1 e u c ot eph r u m, but it is to be kept 



parate from these because it is not hygrophanous. 



The .ap is quite white when yoting, but with advancing age it 

 assumes a more dingy or grayish hue and gradually becomes 

 more broadly convex. lis surface is furnished with white silky 

 fibrils which are su^'si i\ <■ of its varietal name. The margin 

 is often wavy or Irregular because of its crowded mode of 

 growth and before maturity it is usually appendicnlate with 

 gments of the veil. The flesh is white but when the cap is 

 cut through vertically a narrow watery streak may sometimes 

 be seen along the part next the gills. The gills are concealed at 

 first l»y the copious white flocculent or webby veil. They are 



