North American species of Mycena.

146 NORTH AMERICAN SPECIES OF MYCENA

exuding a drop of a blackish-red juice but the remaining drops dull
orange.
Spores subovoid, 7-8.5 X 3.5-4,, amyloid; basidia four-spored,
17-19 X 7-8 Au; cheilocystidia numerous, forming a sterile band along
the gill edge, somewhat fusoid with subacute apices, smooth, contents
sordid reddish brown, 28-33 X 6-9,; pleurocystidia not differentiated; gill trama dark vinaceous brown in iodine; pileus trama with
a thin adnate pellicle, beneath it a region of somewhat inflated cells,
the remainder floccose, becoming dark vinaceous brown in iodine
below the pellicle; stipe tissue dark vinaceous brown in iodine.
Habit, habitat, and distribution.-Densely gregarious on needle
beds under Douglas fir and Sitka spruce; Washington, Oregon, and
California.
Material studied.-Smith, 7775, 7809, 7975, 8020, 8272, 8329,
8499, 8618, 9078, 9085, 13100, 13336, 14077, 14827, 17064. Flett,
Bremerton, Washington.
Observations.-This species is separated from M. sanguinolenta
by the smaller spores, lack of pleurocystidia, and the more pronounced yellowish colors of the latex as well as those of both the pileus
and the stipe. Both species were observed growing in great abundance in northern California and were readily recognizable. M. subsanguinolenta can nearly always be distinguished from M. Atkinsoniana by its glabrous stipe. The two species are also readily
distinguished by their habitats and general appearance. The appearance of M. Atkinsoniana is similar to that of M. haematopus,
whereas that of M. subsanguinolenta is similar to that of M. sanguinolenta. From the collections of both which have been examined there
appears to be a distinct difference in color, also, but since there is
likely to be considerable variation in the shades of red, reddish brown,
or purplish brown, it seems best not to emphasize it.
62. MYCENA SANGUINOLENTA (Fr.) Quelet
Champ. Jura et Vosges, p. 244. 1872
Agaricus (Mycena) sanguinolentus Fries, Syst. Myc., 1: 149. 1821.
Galactopus sanguinolentus Murrill, North Am. Flora, 9: 319. 1916.
Illustrations:
Plate 16 B; Text fig. 13, nos. 1-2 (p. 148).? Beardslee and Coker, Journ. Elisha Mitchell Sci. Soc., 40, pl. 7.
Fries, Icon. Sel. Hymen., 1, pl. 83, fig. 3.
Lange, Flora Agar. Dan., 2, pl. 50 A.
Ricken, Die Blatterpilze, 2, pl. 110, fig. 7.