North American species of Mycena.

456 NORTH AMERICAN SPECIES OF MYCENA

MYCENA CARBONICOLA Murrill
Mycologia, 8: 220. 1916
Prunulus carbonicola Murrill, North Am. Flora, 9:,341. 1916.
"Pileus broadly convex, scattered, reaching 2 cm. broad; surface
glabrous, hygrophanous, faintly striate to the disk, ochraceousbrown, darker and slightly floccose when young, margin entire, concolorous: lamellae adnate, subventricose, subconcolorous, crowded:
spores ellipsoid, smooth, hyaline, 7-8 X 5-6 /j: stipe cylindric, subequal, glabrous, shining, white, hollow, 3-4 cm. long, 2 mm. thick.
"Type collected on burned sticks in Cooper's Ranch, at the base
of El Yunque Mountain, Baracoa, Cuba, March, 1903, L. M. Underwood & F. S. Earle 423 (herb. N. Y. Bot. Gard.).
"Distribution: Known only from the type locality."
The spores of the type measure 7-9 X 5-5.5, and are smooth,
ellipsoid, hyaline, and nonamyloid. The basidia are four-spored.
No pleurocystidia were seen, and the cheilocystidia were very rare.
The latter are saccate, measure 26-30 X 10-18,, and are smooth
and hyaline. They collapse readily and are difficult to demonstrate.
The tramae of the gills and pileus revived very poorly, and no reliable
information could be obtained except that they were yellowish in
iodine.
This appears to be a very distinct species and one which might
readily be mistaken for a Galerina or a Conocybe because of its pale
cinnamon-brown color. The consistency of the dried fruiting bodies
is very soft and fragile-much like that of the fragile gray Mycenae.
MYCENA CINEREIAVELLANEA MURRILL
Mycologia, 8: 220. 1916
Prunulus cinereiavellaneus Murrill, North Am. Flora, 9: 340. 1916.
"Pileus small, delicate, conic, solitary, 6 mm. broad, 5 mm. high;
surface smooth, glabrous, striate, pale-avellaneous, ashy-white on
the umbo: lamellae adnexed, subcrowded, rather narrow, dull-white:
spores globose, smooth, hyaline, granular, 5-6 u: stipe cylindric,
equal, whitish-pulverulent at the apex, very pale avellaneous or dullwhitish below, 2 cm. long, 1 mm. thick.
"Type collected in soil rich in humus on a bank at Monkey Hill,
near Cinchona, Jamaica, 1700 m. elevation, January 4, 1909, W. A.
& Edna L. Murrill 775 (herb. N. Y. Bot. Gard.).
"Distribution: Known only from the type locality."