Basidiomata cespitose. On very rotten wood buried in sandy soil. Only known from the holotype.
Pileus 15 - 20 mm across, conical to campanulate,
not infrequently with a papillate umbo, not sulcate, translucent-striate,
pruinose, glabrescent, umber brown, paler at the margin.
Flesh thin. Odour stated to be alkaline. Lamellae c. 16
reaching the stipe, tough, ascending, 1.5 mm broad, almost
free to emarginate, whitish with a pale brownish tint, the
edge convex, white. Stipe 70 - 80 x 1 mm, hollow, cartilaginous
and brittle, equal, terete, flexuous, smooth, apically pruinose,
glabrous farther below, yellowish brown or concolorous with
the pileus, the base covered with long, coarse, whitish
Basidia c. 27 x 10 µm, clavate, 2-spored,
clampless, with plump sterigmata 7 µm long. Spores 9.8 - 11.6 x 6.3 - 8 µm, pip-shaped, smooth, amyloid.
Cheilocystidia 27 - 54 x 11 - 13.5 µm, forming a sterile
band (lamellar edge homogeneous), clavate (although frequently
rather more fusiform on account of the broad base of the
neck), more rarely subcylindrical, clampless, towards the
middle of the lamella passing into a broad, bifurcate neck,
near the pileus margin with several bifurcate or branched
necks or densely covered with numerous coarse excrescences
11 - 27 x 2.5 - 7 µm. Pleurocystidia absent. Lamellar
trama brownish vinescent in Melzer's reagent. Hyphae of
the pileipellis 2.7 - 5.8 µm wide, clampless, covered
with warts 1.8 - 3.5 x 1.5 - 2.5 µm and warted excrescences
6.5 - 30 x 1.5 - 2.5 µm. Hyphae of the cortical layer
of the stipe 1.3 - 2.5 µm wide, clampless, sparsely
covered with simple, cylindrical excrescences 0.9 - 4.5
x 0.9 - 2 µm, with rare terminal cells which are 2.5
- 3.5 µm broad and fairly coarsely diverticulate.
SKJEBERG, Høysand, 30 May 1982, Ø. Weholt
M3/82 (Holotype) (L)
The entire description has been taken from Maas Geesteranus (1995).
Mycena dicranolophus belongs to section
Mycena, where it comes close to M. hemispherica
Peck and M. galericulata
(Scop) Gray, but according to the author they should be distinguishable
on account of the more numerous and broader lamellae and the
shape of the cheilocystidia. In my opinion, the cheilocystidia, as they are shown in the author´s figures, seem to fit well within the variation of M. galericulata.