Jan. 1908] Species of Agaricaceae 27 



NORTH AMERICAN SPECIES OF AGARICACEAE. 



A. P. MORGAN. 



THE MELANOSPORAE. (Continued). 



(Continued from page 255). 



VII. HYPHOLOMA Fries, Syst. Myc. I, 182 1. 



Pileus fleshy to suhinemhranaceous, convex or companiilate 

 then expanded; the veil marginal, zuoven into a iveh tvhich ad- 

 heres to the margin of the pileus. Stipe tubidous and stuffed or 

 generally hollow, 'fragile to firm and tough, mostly fibrillose or 

 scaly. Lamellae adnexed or adnate, the color at maturity becom- 

 ing some shade of brown; spores brown or purpe-brown. 



The species usually caespitose, growing upon and around 

 old decaying stumps and trunks. 



I. APPENDICULATAE. Pileus submembranaceous, thin 

 and fragile, hygrophanous; the surface glabrous, often rugulous, 

 scarcely striatulate. Stipe fistidous, fragile, glabrous or silky 

 fibrillose, nearly alw^ays zuhite. Lamellae usualy narrow and 

 close or crowded. 



The species of this tribe are to be distinguished from those 

 of Psilocybe chiefly by their caespitose habit and the more evi- 

 dent veil. 



a. Lamellae at first zuhite or whitish. 



1. HYPHOLOMA APPENDICULATUM Bulliard, 

 Herb. Fr. 1788. A. (Hypholoma) saccharinophilus Peck, 

 25 N. Y. Rep. 1872. 



Pileus submembranaceous, ovoid then convex and expanded, 

 glabrous, hygrophanous. when dry rugose and somewhat 

 atomate. at first brown becoming tawny or pale ochre ; the flesh 

 thin, fragile, concolorous. Stipe equal, fistulous, glabrous, white, 

 pruinate at the apex. Lamellae narrow, close adnexed, at first 

 whitish then incarnate-brown; spores pellucid brown, elliptic, 

 6-8 X 3-4 mic. 



Densely caespitose, growing on old stumps and trunks ; New 

 England to the Pacific Coast. Pileus 4-8 cm. in diameter ; stipe 

 6-9 cm. long, 3-6 mm. thick. 



2. HYPPIOLOMA INCERTUM Peck, 29 N. Y. Rep. 

 1876. Hypholoma cutifractum Peck, Bull. Torr. Club, 

 1895. Stropharia irregularis Peck, Bull. Torr. Club, 1900. 



Pileus fleshy, convex or subcampanulate then expanded, 

 often rugulose, hygrophanous, whitish with the center yellowish, 



