North American species of Mycena.

GLUTINIPES: VISCOSAE

421

32-48 X 5-9,. Specimen typicum in Herb. Univ. Mich. conservatum. Legit A. H. Smith, n. 16656, prope Noisy Creek, Baker
Lake, Wash., Sept. 5, 1941.
Pileus 8-15 mm. broad, subovoid when young, becoming obtusely
conic and finally obtusely campanulate, surface hoary at first but
soon polished, translucent-striate with dark striations, sulcate in age,
viscid when wet, pellicle thick and tenacious, completely separable,
color variable, a mixture of yellow, brown, and gray, dark on disc
when young, pale yellow on margin, pale yellowish over all except the
disc and striae in age; flesh thin, pliant, odor and taste strongly
farinaceous; lamellae pallid yellowish, subdistant, ascending, hooked,
edges even; stipe short, 1-3 cm. long, 1-1.5 mm. thick, pale clear
yellow, glutinous, glabrous, base faintly strigose.
Spores 8-10 X 5-7 j, amyloid, ellipsoid to ovoid (a few subglobose); basidia four- or occasionally two-spored; gill edges heteromorphous, the cheilocystidia very abundant, awl-shaped to subventricose,
smooth or with somewhat irregular walls, gelatinizing only in age
(gelatinization confined mostly to the pedicel), 32-48 X 5-9 g;
pleurocystidia embedded and very difficult to locate, scattered, similar
to cheilocystidia; gill and pileus trama weakly amyloid.
Habit, habitat, and distribution.-Scattered on conifer logs (Abies
sp.); Noisy Creek, Baker Lake, Washington. Known only from the
type locality.
Observations. —This fungus is readily distinguished from M.
epipterygia var. lignicola by its awl-shaped cheilocystidia. In color,
odor, and taste, as well as in general habit, the two are very similar
and can easily be confused unless the gill edges are studied. From
the typical variety of the species it is distinguished by its more intense
colors, habitat, and simple or seldom-branched cystidia.
215. MYCENA VISCOSA (Sec.) Maire
Bull. Soc. Myc. Fr., 26:162. 1910
Agaricus alcalinus viscosus Secretan, Mycogr. Suisse, 2: 312. 1833.
Mycena splendidipes Peck, Bull. New York State Mus., 167: 28. 1913.
Prunulus splendidipes Murrill, North Am. Flora, 9: 330. 1916.
Mycena epipterygia var. viscosa Ricken, Die Blatterpilze, p. 419. 1915.
Illustrations:
Plate 92; Text fig. 51, nos. 3, 9 (p. 416).
Konrad et Maublanc, Icon. Sel. Fung., 3, pl. 227 (very good).
Peck, Bull. New York State Mus., 167, pl. 10.