North American species of Mycena.

350 NORTH AMERICAN SPECIES OF MYCENA

New York, Illinois, Michigan, Missouri, and Washington in the
United States and from Ontario and Manitoba in Canada.
Material studied.-Smith, 32-357, 32-373, 32-541, 32-560, 32 -562, 32-587, 32-613, 32-634, 33-1072, 7675, 8627, 9310, 9316, 10981,
11082, 13451,13595,13689, 14076,14472,14967, 14977,15348,15509,
15524, 15753, 16584, 18853, September 3, 1929, Michigan. Burke,
1942, Alabama. Flett, Washington. Hesler, 3818, 7825, 15075.
Kauffman, Mt. Hood, Oregon (as M. inclinata); 1926, Mt. Gretna,
Pennsylvania (not typical); October 17, 1914, Michigan. Overholts, 876, 1531, 11082. Also types of species listed in synonymy.
Observations.-The pellicle of the pileus is very thin, and at times
is difficult to demonstrate under the microscope. Fresh specimens
sometimes appear to have a rather thick separable though nongelatinous pellicle, but this is caused by the removal of the hypoderm
along with the tissue above it. The odor is usually not very pronounced, and the taste usually is only mildly farinaceous. Ktihner
(1938) describes the odor and taste as somewhat radishlike or
farinaceous. I have one collection (14976) from Olympic Hot Springs,
Olympic National Park, Washington, in which the odor was strongly
raphanoid, but which otherwise appears to belong here.
No other species has been so frequently misidentified in North
America as M. galericulata. Most of the early workers had no clear
concept of it. Among Peck's collections I found nearly all the cartilaginous lignicolous Mycenae classified under this name, including
one which he considered a variety with rough spores. His variety
longipes and variety expansus very likely belong to some other species,
but the specimens could not be found. Most investigators, including
Kauffman (1918), placed M. inclinata under M. galericulata. The
stipe of M. galericulata is smooth and polished at all times, whereas
that of M. inclinata is more or less covered with white flecks when
young. This is the classical distinction between the two, and it is
also a reliable character-at least for young material. The stipe of
M. inclinata soon becomes glabrous as well as rusty brown over the
basal portion.
Peck recognized M. galericulata as a distinct species, but, because
of its somewhat incurved cap margin, placed it in Collybia, naming
it C. ligniaria. The spores of Peck's type measure 7-10 X 6-7 A,
and the cheilocystidia are clavate and roughened, as in M. galericulata. No pleurocystidia were found. Murrill (1916) placed Peck's
species in Mycena (Prunulus). Apparently his interpretation of
C. ligniaria was based on material sent to him by Peck. I examined