North American species of Mycena.

290 NORTH AMERICAN SPECIES OF MYCENA

of narrow, interwoven hyphae, the central portion of long, cylindric,
moderately broad cells; pileus trama with a fairly thick subgelatinous
pellicle, a well-differentiated hypoderm, and a filamentous tramal
body, all except the pellicle vinaceous brown in iodine.
Habit, habitat, and distribution.-Scattered to gregarious on debris
in hardwood or mixed conifer and hardwood forests. I have examined
material from New York, Michigan, Washington, Oregon, and California. Along the Pacific coast it is occasionally rather abundant in
red-alder slashes. In eastern North America it is quite common late
in the season along with M. semivestipes and M. pullata.
Material studied.-Smith, 32-572, 32-620, 33-1139, 1257, 9547,
3200, 3268, 8327, 13767, 15529, 17070; two collections, 1931, Michigan. Kauffman, New York, Michigan, and Oregon. Mains, 32-502.
Observations.-Kiihner uses the name "M. filopes" for this fungus.
Since Lange's concept has been generally accepted by mycologists,
it appears better, in the interests of a stable nomenclature, to use it
here. The species is one of the easiest Mycenae to recognize, but it
lacks a single fixed character clearly separating it from all others.
Its grayish to brownish (but never vinaceous) colors, long and usually
flexuous stipe, pliant consistency, lubricous feel, fairly large spores,
and more or less fusoid-ventricose cystidia amply distinguish it. It
appears to be closely related to M. polygramma and, in fact, may at
times be mistaken for that agaric if the stipe is more striate than
usual. M. vitilis lacks the pseudorhiza of M. polygramma and has
more conspicuous cheilocystidia and, generally, a more slender stature.
M. pullata is practically identical with M. vitilis in all characters
except color.
140. MYCENA PULLATA (Berk. & Cke.) Saccardo
Syll. Fung., 5: 277. 1887
Agaricus (Mycena) pullatus Berkeley & Cooke, Grevillea, 11: 69. 1882.
Illustrations:
Plate 57; Text fig. 34, nos. 3-4 (p. 289).
Cooke, Ill. Brit. Fungi, pl. 232 (no. 237).
Pileus 5-20 mm. broad, obtusely conic or somewhat ovoid when
in button stages, the margin appressed, becoming broadly campanulate to expanded-umbonate, the margin often flaring or recurved
somewhat, surface hoary but soon becoming naked and polished,
usually appearing comparatively dry, fresh specimens even but soon
becoming sulcate along the margin, colors dark vinaceous brown or