North American species of Mycena.

GLUTINIPES: FULIGINELLAE

437

distant, narrow to moderately broad, tapering toward the margin
of the pileus, white to pale gray, edges even and pallid; stipe 1-2 (3)
cm. long, 1-1.5 mm. thick, hollow, elastic and cartilaginous, equal,
base slightly white-strigose, remainder at first covered with a dense
coating of coarse white pruina, soon glabrous and glutinous to the
touch, dark gray to bluish gray, becoming pallid.
Spores broadly ellipsoid, 7-9 X (3) 4-4.5,u, amyloid, reaction
strong; basidia four-spored, 28-30 (35) X 5-6,; cheilocystidia filamentous, smooth, 38-46 X 6-7 u; pleurocystidia not differentiated;
gill trama vinaceous brown in iodine, subhymenium hyaline in iodine
but not truly gelatinous; pileus trama with a thick gelatinous pellicle,
floccose beneath it, floccose portion vinaceous brown in iodine; stipe
with an outer gelatinous sheath, interior reddish brown in iodine.
Habit, habitat, and distribution.-Gregarious to scattered on fallen
leaves of conifer needles during late spring or summer; Alabama,
Tennessee, New York, Michigan, and Washington in the United
States and Ontario in Canada. Rare.
Material studied.-Smith, 33-592, 33-695, 709, 709a, 735, 1758,
6509, 7358, 7476, 9780, 10080, 10119, August 31, 1936, Lake Timagami, Ontario. Atkinson, 9853. Burke, Alabama. Hesler, 11483.
Observations.-The nongelatinous gill edges, filamentous cheilocystidia, and, usually, the persistent fruity odor make this a very
distinctive species. When young neither the cap nor the stipe feels
viscid to the touch because of the presence of a thin coating of nongelatinous hyphae. These either wear away or gelatinize, because in
age the stipe is often covered with gluten much as in M. rorida. The
gluten usually becomes aggregated toward the base of the stipe or in
wet weather is washed off almost entirely. In dry weather it may not
develop to the point of being readily visible. In all the variations
noted, however, a gelatinous layer was readily observed under the
microscope on cross sections of fresh stems. The thickness of the
pellicle on the pileus varies in much the same manner as that of the
stipe.
225. MYCENA QUINAULTENSIS Kauffman in Smith
Mycologia, 27: 589. 1935
Illustrations: Plates 94 B, 96; Text fig. 53, nos. 1, 4 (p. 438).
Pileus 1-4 cm. broad, obtusely conic to obtusely campanulate
when young, occasionally almost convex, becoming campanulate to
expanded, nearly always obtusely umbonate, frequently with a slight