North American species of Mycena.

922 NORTH AMERICAN SPECIES OF MYCENA

mens were in hand); gill trama amyloid; pileus trama with a thin nongelatinous pellicle, the cells of which give off more or less upright
branches 6-10 X 2.5-3,, hypoderm sharply differentiated, cells 90 -40 g thick, filamentous tramal body very narrow and irregular, all
except the pellicle vinaceous brown in iodine.
Habit, habitat, and distribution.-Scattered on sphagnum along
with M. praelonga in June; Michigan. Known only from the type
locality.
Observations.-The spores prevent this species from being referred
to M. capillaripes, but it also differs in lacking an odor and in the
scarcity of pleurocystidia. It appears to be closest to M. rubromarginata, but is distinguished by its terrestrial habitat, narrow
cystidia, and long stipe. It has the habit of M. praelonga, and appears to be a very rare fungus. I have searched bogs for it repeatedly
since 1932 without finding it again.
104. MYCENA CAPILLARIPES Peck
Ann. Rep. New York State Mus., 41: 63. 1888
Prunulus capillaripes Murrill, North Am. Flora, 9: 328. 1916.
Mycena plicosa var. marginata Lange, Stud. Agar. Dan., 1: 18. 1914.
Mycena Langei R. Maire, Bull. Soc. Myc. Fr., 44: 39. 1928.
Illustrations:
Plate 35 A, B, C, D; Text fig. 25, nos. 1-4.
Lange, Flora Agar. Dan., 2, pl. 49, fig. A (as M. plicosa var. marginata).
Smith, Mycologia, 28, fig. 1, no. 2.
Pileus (5) 10-20 (25) mm. broad, oval to convex when young,
becoming obtusely conic to campanulate, in age remaining campanulate or becoming plane, frequently obtusely umbonate, margin appressed against the stipe when young, often flaring somewhat at
maturity or sometimes recurved, occasionally crenate or lobed, surface smooth and with a hoary bloom at first, soon naked and appearing moist, obscurely to conspicuously translucent-striate, sulcatestriate when faded, color generally some shade of vinaceous gray, at
times nearly fuscous and only the margin reddish, occasionally dark
grayish red over all ("light seal brown" to nearly "fuscous" on the
disc and fading to "cinnamon drab" or "pale vinaceous fawn" in one
form, "Prussian red" to "dark Indian red" at first and fading to
"vinaceous fawn" or pale gray with a tinge of vinaceous in age in
another form); flesh thin, fragile, pallid grayish or vinaceous, taste