70 



Mycologia 



io. Drosophila rigidipes (Peck) comb. nov. 

 Hypholoma rigidipes Peck, Bull. N. Y. State Mus. 139: 24. 1910. 



Pileus fleshy, thin, convex or broadly convex, gregarious, 2.5-5 

 cm. broad; surface dry, fibrillose-squamulose, tawny-brown, often 

 reddish on the disk; context whitish, with a mild taste; lamellae 

 close, narrow, slightly sinuate, adnexed, brownish-red, becoming 

 dark-purplish-brown or black ; spores ellipsoid, apiculate, 10-12 x 

 6-8 /a; stipe slender, rigid, equal, hollow, fibrillose-squamulose, 

 concolorous or a little paler than the pileus, 5-10 cm. long, 4-6 mm. 

 thick. 



Type locality : North River, Warren County, New York. 



Habitat : Damp places among tall herbs. 



Distribution : New York and Massachusetts. 



Illustrations: Bull. N. Y. State Mus. 139: pi. 3, f. 1-6. 



The spores of Peck's type are slender, smooth, very dark, apicu- 

 late, 8.5-10 x 6-7 jx. Two collections made by me in the Adiron- 

 dacks have spores that are narrower, more inequilateral, and some- 

 what lighter in color, measuring 9-10.5 x 5 fx. The plants are also 

 much less fibrillose-squamulose, appearing almost glabrous in dried 

 specimens. In spite of these differences, however, I hesitate to 

 separate them as a distinct species. 



11. Drosophila hololanigera (Atk.) comb. nov. 



Hypholoma hololanigerum Atk. Ann. Myc. 7: 371. 1909. 



Entire hymenophore covered with dense, long, delicate, whitish, 

 fibrous scales. Pileus ovoid to convex, fragile, gregarious, 2-2.5 

 cm. broad; surface hygrophanous, watery -brown, becoming pale- 

 ochraceous-buff to pinkish-buff on drying, not striate; lamellae 

 elliptic, adnate, purplish-brown, whitish on the edges ; spores sub- 

 ellipsoid, slightly inequilateral, reddish-purple, smooth, 7-9 x 3.5- 

 4.5 fx; cystidia ellipsoid, stalked, 40-50 x 12-15 /x; stipe slender, 

 hollow, fragile, even, white with a very pale pink tint, 6-7 cm. long, 

 4-5 mm. thick. 



Type locality : Ithaca, New York. 

 Habitat : On very rotten wood in woods. 

 Distribution : Known only from the type locality. 

 The type of this species has been destroyed by insects, leaving 

 only the spores, a bit of stipe, and the description. 



