North American species of Mycena.

432 NORTH AMERICAN SPECIES OF MYCENA

form of the species. The other varieties mentioned by Peck were
not located.
Mycena clavicularis is one of the easiest Mycenae to recognize,
although it is a very ordinary-appearing gray fungus. It is known
by its dry or moist but not viscid cap, and its decidedly viscid stipe.
The first evidence one has of the latter character is the slipperiness
of the stipe when one tries to pull the carpophores from their attachment. Microscopically the species is distinct because of the roughened cystidia, nongelatinous gill edge, and medium-sized spores.
The color of the fruiting bodies is dominantly gray, with no yellow
in the gills, and just enough in the pileus and stipe to give these parts
a sordid appearance.
221. MYCENA MILITARIS Karsten
Symb. Myc. Fenn., 29: 91. 1889
Pileus 3-4 mm. broad, conic-campanulate, in age with a sharply
conic umbo, small forms often papillate, glabrous, viscid, "fuscous"
to blackish on the disc, "hair brown," "wood brown," "avellaneous,"
or pale gray on the margin, pellucid-striate when moist, sulcate at
maturity, in age pallid cinereous with a blackish umbo; flesh thin
and pliant, grayish, odor and taste slightly farinaceous; lamellae
gray, subdistant, bluntly adnate or with a small decurrent tooth,
moderately broad, edge whitish; stipe 2.5-3 cm. long, 1 mm. thick,
yellowish gray below, paler above, pallid over all and somewhat
translucent in age, very viscid, base bulbous.
Spores 8-10 X 3-4,, narrowly ellipsoid, amyloid; basidia fourspored; gill trama with a subgelatinous subhymenium, the floccose
central portion vinaceous brown in iodine; pileus trama with a thick
gelatinous pellicle nearly half the thickness of the trama, beneath it a
zone of cells having dark contents, the remaining portion filamentous;
stipe with a thick outer gelatinous layer, the inner tissue purplish red
in iodine.
Habit, habitat, and distribution.-Gregarious under conifers,
early in September; Michigan and New York. Rare.
Material studied.-Smith, 33-896, 903.
Observations.-The collections cited contain smaller carpophores
than those originally described by Karsten, but a difference in size
in a case like this is not necessarily significant. My specimens were
few and gave the impression of being an off-season form. The conic