22 



Mycologia 



times pitted or reticulate-rugose in dried specimens, uniformly 

 avellaneous-isabelline ; margin paler, thin, entire, not incurved, 

 but deflexed and appressed when young ; lamellae adnate, arcuate, 

 broad, rather crowded, white to pale-avellaneous and finally purp- 

 plish-brown with white edges ; spores ellipsoid, rounded at both 

 ends, smooth, pale-purplish-brown with a yellowish tint under the 

 microscope, 7X3.5-4-5/*; stipe curved, tapering upward, white, 

 smooth and glabrous above, with abundant cottony tomentum at 

 and near the base, 1.5 cm. long, 2 mm. thick. 



Type collected on dead wood in a moist, virgin forest at 

 Motzorongo, near Cordoba, Mexico, January 15, 1910, W. A. & 

 Edna L. Murrill 1073 (herb. N. Y. Bot. Gard.). 



11. Atylospora albipes sp. nov. 



Pileus convex, not umbonate, scattered, 1 cm. broad; surface 

 striate, finely asperulate, pale-avellaneous, isabelline on the disk; 

 margin straight, entire, concolorous ; lamellae adnate, rather 

 broad, crowded, white to pinkish, at length discolored ; spores el- 

 lipsoid, smooth, decidedly purplish-brown under the microscope, 

 about 7-8 X 4-5 ; stipe very slender, subcartilaginous, equal, 

 white, shining, hollow, 2-3 cm. long, 1-2 mm. thick. 



Type collected on a decayed banana stalk in a ravine east of 

 Hope Gardens, Jamaica, 240 m. elevation, December 12, 1908, 

 W. A. & Edna L. Murrill 22 (herb. N. Y. Bot. Gard.). 



12. Atylospora bulbillosa (Fries) 



Agaricus bulbillosus Fries, Nova Acta Soc. Sci. Upsal. III. 1 : 26. 

 1851. 



Psathyra bulbillosa (Fries) Sacc. Syll. Fung. 5:1065. 1887. 



Known only from specimens collected by Oersted on the ground 

 near Cartago, Co'sta Rica. The name refers to the enlarged, bul- 

 bous base of the stipe. There is a good colored figure at Copen- 

 hagen, but no specimens have been found. 



13. Atylospora pallidispora sp. nov. 



Pileus convex to subexpanded, with a short, cuspidate umbo, 

 scattered, 1 cm. broad ; surface finely tomentose, not striate, pale- 

 fulvous with a peculiar sheen ; lamellae adnate, rather crowded, 

 broad behind, latericeous-fulvous, entire and pallid on the edges ; 



