20 



Mycologia 



4. Atylospora epibates (Fries) 



Agaricus epibates Fries, Nova Acta Soc. Sci. Upsal. III. t: 26. 

 1851. 



Psathyra epibates (Fries) Sacc. Syll. Fung. 5: 1070. 1887. 



Known only from specimens collected by Oersted on decayed 

 wood in Naranjo, Costa Rica. This is a minute species resemb- 

 ling Prunulus, the slender stipe being orbicular at the base and 

 appressed to the matrix. There is a good colored figure at 

 Copenhagen, but no specimens have been found. 



5. Atylospora lateritia sp. nov. 



Pileus hemispheric to broadly convex, not expanding, solitary, 

 8 mm. broad, 3 mm. thick ; surface smooth, glabrous, striate, dull- 

 latericious, pale-testaceous on the disk; margin straight, entire, 

 whitish ; lamellae adnexed, rather broad, distant, pale-chestnut, 

 entire and somewhat paler on the edges ; spores ovoid or ellipsoid, 

 smooth, usually 2-guttulate, purplish-brown, about 9X5/*; stipe 

 equal or slightly tapering upward, concolorous below, paler above, 

 smooth, glabrous, 2 cm. long, 1-1.5 mm. thick. 



Type collected among moss on a clay bank at Cinchona, 

 Jamaica, December 25-January 8, 1908-9, W. A. & Edna L. 

 Murrill 471 (herb. N. Y. Bot. Gard.) 



6. Atylospora byssina sp. nov. 



Pileus strongly convex to plane, thin, fragile, not umbonate, 

 gregarious, 5-10 mm. broad; surface varying from pinkish-gray 

 to brown tinged with pink, glabrous, nearly smooth ; margin 

 entire, concolorous ; lamellae adnate, crowded, rather broad, be- 

 coming dark-purplish-brown or almost black; spores ellipsoid, 

 rounded at both ends, smooth, very pale purplish-brown under 

 the microscope, 7-8X4-5/*; stipe filiform, pallid or rosy-isabel- 

 line, smooth, glabrous, about 1.5 cm. long, less than 1 mm. thick, 

 attached to the substratum by a very conspicuous, radiating mass 

 of tomentum, which is evidently white when fresh, but slightly 

 yellowish in dried specimens. 



Type collected on a dead log in open woods at Rio Piedras, 

 Porto Rico, December I, 191 5, Bruce Fink 481 (herb. N. Y. 

 Bot. Gard.). Also collected in the same locality on dead logs in 



