Mycological Flora of the Rockies 125 



If we consider the well-known orange-yellow to yellow form 

 as the center of the color shading, we get as one extreme this 

 brilliant red form in the Rocky Mountains, and as we go east 

 and south to Virginia, I have noted that the colors tend to be 

 much paler, even when in a favorable growing condition. The 

 tendency to fade rapidly to dingy white after maturity is much 

 more common there than in the North. 



Armillaria macrospora Pk. Rare. Tolland. 



Mossy or moist ground under spruce and fir; solitary, rarely 

 two or more. Because of the inadequate description published 

 by Peck, it seems desirable to give an emended account of this 

 species, especially because another large-spored plant, A. evanes- 

 cens (Love joy) Murrill, has been described from the Rocky 

 Mountains : 



Pileus fleshy, 8-12 (20) cm, broad, convex, obtuse, then 

 expanded-plane, becoming turbinate in age, with a gelatinous 

 pelhcle which is viscid when moist, even, glabrous, shining when 

 dry, ''cinnamon-buff" to ''pinkish-buff" (Ridg.); sometimes 

 tinged brownish-yellowish; margin acute, sometimes subappen- 

 diculate from the veil; flesh very thick in centre, abruptly quite 

 thin at margin, white; gills acuminate-long-decurrent, narrow, 

 crowded, a few forked toward margin of pileus, white to "light 

 buff" (R.), edge entire; stem 4-7 (9) cm. long, 1.5-3 cm. thick, 

 subequal or tapering downwards, stout, solid, white within; veil 

 thick, persistent, rather membranous, at first sheathing the stem 

 to middle or above, terminating in a flaring, membranous por- 

 tion which becomes the annulus, at length torn and forming 

 subconcentric patches colored like pileus, the thin outer layer of 

 the veil composed of gelatinous hyphae and viscid when wet; 

 odor subfarinaceous when flesh is crushed, taste like rancid 

 meal or somewhat disagreeable; spores 13-16 (17) x 5-6 (rarely 

 7) /JL, subcyhndric-subfusiform, hyaline, granular within; cystidia 

 none; basidia 85-90x9-11 [i. 



Armillaria mellea Fr. Rare in the conifer forests, but then 

 attached to coniferous wood. 



Armillaria viscidipes Pk. Solitary. Not infrequent. Tol- 

 land, Leal. 



