North American species of Mycena.

EUMYCENA: ADONIDAE

165

"Gregarious. Under balsam fir trees. North Elba. September.
The center of the pileus is often more highly colored than the rest."
The original description is here quoted. I have not seen fresh
specimens. Sections from the type showed that the basidia were
four-spored; the spores smooth, 7-8 X 4-5.5 M, and broadly ellipsoid.
Pleurocystidia were not found. The cheilocystidia measured 12-26
X 8-12 i and were clavate, and the enlarged portions were covered
with numerous short rodlike protuberances. The fungus is related
to M. elegans, as that name is used in this work, but apparently differs
in not having a yellow gill edge and in lacking pleurocystidia. Both
apparently have a tendency, rather common among Mycenae, to
stain reddish brown in age.
Mains (5183, August 24, 1940, near Estes Park, Colorado) has
found one collection. It is the only authentic material I have seen
besides the type. The spores, apparently, are nonamyloid, but the
reaction was not convincing.
72. MYCENA CAROLINENSIS Smith and Hesler
Journ. Elisha Mitchell Sci. Soc., 56: 319. 1940
Illustrations:
Text fig. 15, nos. 7-8, 10-11 (p. 160).
Smith and Hesler, Journ. Elisha Mitchell Sci. Soc., 56: Fig. I, nos. 8-10.
1940.
Pileus 5-10 mm. broad, convex, remaining broadly convex or
becoming plane, margin appressed against the stipe at first, surface
subviscid to viscid, glistening when moist, translucent-striate and
soon sulcate to the flattened disc, glabrous, color "maize yellow"
when young, fading on the margin and the disc becoming tinged with
brown in age, sometimes sordid brownish over all; flesh thin, pliant
(but not reviving), whitish, odor and taste mild; lamellae bluntly
adnate, moderately broad (up to 2 mm.), subdistant, 10-13 reach
the stipe, one tier of lamellulae, yellowish white, edges pallid, under a
lens the faces appearing pruinose from the projecting cystidia; stipe
2-3 cm. long, 0.5-1 mm. thick, strict, equal, pliant, pale yellow when
young, becoming sordid brownish in age, dull and unpolished (pubescence hardly visible under a lens), inserted on the substratum.
Spores 7-8 X 3.5-4 i, amyloid, ellipsoid; basidia four-spored;
cheilocystidia embedded or projecting, clavate to subcapitate with
echinulate apices or more or less contorted, some similar to pleuro