64 Journal of Mycology [Vol. 14 



NORTH AMERICAN SPECIES OF AGARICACEAE. 



A. P. MORGAN. 



i8. HYPHOLOMA AMBIGUM Peck, Bull. Torr. 

 Club, 1898. 



Pileus fleshy, convex becoming nearly plane, glabrous slightly 

 viscid when moist, straw-color inclining to pale orange ; the flesh 

 thin, white; veil white, thick appendiculate, deciduous. Stipe 

 slender, equal, fistulous, squamose near the base, paler than the 

 pileus. Lamellae close, adnexed, at first grayish, becoming black- 

 ish-brown ; spores elliptic, 12-15 x 7-8 mic. 



Growing in Fir woods; Oregon, Lane. Pileus 5-13 cm. in 

 diameter ; stipe 12-22 cm. long. The dried specimens have the 

 general appearance of some species of Stropharia. 



19. HYPHOLOMA PECOSENSE Cocherell, Journ. 

 Mycol. X, 1904. 



Pileus fleshy, convex, umbonate ; the surface smooth, slightly 

 viscid, cream-color, subochraceous in the center; veil pale yellow, 

 lacerate, appendiculate. Stipe long, fistulous, smooth and glab- 

 rous, shining, yellowish white or pale ochraceous, striate at the 

 apex and white-furfuraceous. Lamellae narrow, decurrent, pale 

 purplish-gray, becoming purple-brown ; spores purple-brown, 

 ovoid, i:| X 8 mic. 



Pecos, New Mexico, Graham. Pileus 2.5-4 cm. in diameter; 

 stipe 6-9 cm. long. 



HL VELUTINA. Pileus Heshy, but the flesh thin; the 

 dermis radiatcly HbriUose, the fibres loosened and oppressed or 

 broken into scales, sometimes flocculose. Stipe fibrillose and 

 scaly or flocculose. 



a. Lamellae narroiv. 



20. HYPHOLOMA HISTOSQUAMULOSUM. Peck. 

 25 N. Y. Rep. 1872. 



Pileus firm, convex or expanded, hairy-squamulose, hvgro- 

 phanous, grayish-brown when moist, gray when dry. Stipe short, 

 firm, equal, hollow, slightly hairy-squamulose, and colored as the 

 pileus. Lamellae narrow, rounded behind, gray, then brown ; 

 spores subelliptic, 6 mic. long. 



Growing on prostrate trunks of maple trees in woods ; New 

 York, Peck. Pileus 1-2 cm. in diameter; stipe 2-3 cm. long, 1-2 

 mm. thick. 



