Mycena atroumbonata Peck 1912

Prunulus atroumbonatus (Peck) Murrill
Mycena atroumbonata Peck, Bull. N. Y. State Mus. 157: 29, 1912.
Pileus sub membranous, convex, becoming broadly convex or nearly plane, umbonate, gregarious, 1.2-3.2 cm. broad; stuiace glabrous, darkwatery-brown and shining when moist, grayish-brown with a black umbo when dry, striate-pUcate from the margin half way to the umbo: lamellae thin, moderately crowded, widely sinuate at the inner extremity, decturrent with a tooth, white when young, whitish or livid-white when mature: spores oblong or ellipsoid, granular within, often 2-nucleate, 6-9 X 5-6 m: stipe slender, rather long, glabrous, hollow, radicate, colored like the pileus, with a white villosity at the base, 5-8 cm. long, 1-2 mm. thick.
Type locality: North River, New York.
Habitat: On decaying coniferous trunks, especially of hemlock.
Distribution: Maine and New York.