58 NEW YORK STATE MUSEUM 



Collybia dryophila Bull. 

 Oak-loving Collybia. 



(Hym. Eur. p. 122. Syl. vol. v. p. 234.) 



Pileus thin, convex or nearly plane, sometimes with the margin elevated, 

 irregular, obtuse, glabrous, varying in color, commonly some shade of 

 bay-red or tan color, flesh white; lamellae narrow, crowded, adnexed or 

 almost free, white or whitish, rarely yellowish; stem equal or sometimes 

 thickened at the base, cartilaginous, glabrous, hollow, yellowish orrufes- 

 cent, commonly similar in color to the pileus; spores .00024 to .0003 inch 

 long, .00012 to .00016 broad. 



Pileus I to 2 inches broad ; stem i to 2 inches long, i to 2 lines thick. 



Woods, groves and open places. Common. June to October. 



This is one of our most common and variable species. It occurs 

 throughout the season whenever the weather is sufficiently moist. It 

 grows on the ground, among decaying leaves or on decaying wood. A 

 favorite habitat is in pine groves or under pine trees. It is commonly 

 gregarious but sometimes grows in tufts. The pileus varies in color from 

 whitish or yellowish to dark bay or almost chestnut color. Its spores, 

 like those of C. radkata and some other species, when kept a long time 

 assume a yellowish hue. 



Collybia strictipes Pk. 



Straight-stemmed Collybia. 



(Rep. 41, p. 62.) 



Pileus thin, broadly convex or nearly plane, glabrous, sometimes slightly 

 rugose on the disk, moist but scarcely hygrophanous, whitish or pale- 

 yellow, paler when dry, often more deeply colored on the disk; lamellae 

 thin, close, adnexed or almost free, white ; stem equal, straight, hollow, 

 glabrous, slightly mealy or pruinose at the top, white, often with a dense 

 white mycelioid tomentum at the base; spores ovate or subelliptical, 

 pointed or subacuminate at one end, .00025 ^"^ .0003 inch long, .00016 

 broad. 



Pileus 1.5 to 2 inches broad; stem 1.5 to 2.5 inches long, 2 to 3 hues 

 thick. 



Woods. Catskill mountains. September, 



From small unspotted forms of C. maculata this species may be dis- 

 tinguished by us even stem, less crowded lamellae and by the shape of its 

 spores. 



