North American species of Mycena.

MYCENA S. F. GRAY
Fries, Elias, Syst. Myc., 1: 140 (as a tribe of Agaricus). 1821.
Gray, S. F. Nat. Arr. Brit. Plants, 1: 619. 1821.
(Not Mycena in Murrill, North Am. Flora, 10: 190. 19171)
SYNONYMY? Gloiocephala Masse, Grevillea, 21: 33. 1892.
Mycenula Karsten, Medd. Soc. Faun. Fl. Fenn., 16: 89. 1889.
Eomycenella Atkinson, Bot. Gaz., 34: 37. 1902.
Basidopus Earle, Bull. New York Bot. Gard., 5: 426. 1909.
Collopus Earle, ibid.,
Galactopus Earle, ibid.
Insiticia Earle, ibid., p. 425.
Linopodium Earle, ibid., p. 427.
Stereopodium Earle, ibid., p. 426.
Pseudomycena Cejp, Publ. Fac. Sci. Univ. Charles, p. 138. 1930.
Hemimycena Singer, Rev. Mycol., 3: 194. 1938.
Mycenella (Lange) Singer, ibid., p. 195.
Fayodia Kiihner em. Singer, Lloydia, 5: 128. 1942.
Hydropus (Kiihner) Singer, ibid.
Type of the genus: Agaricus (Mycena) galericulatus Fries
KEY TO THE SUBGENERA OF MYCENA
1. Spores rough, nodulose, or echinulate or appearing so when
stained (M. luteopallens with very slightly wrinkled spores
is keyed out in Eumycema).............. Mycenella, p. 442
1. Spores smooth.......................................... 2
2. Stipe with basal disc or bulb, or, if without a bulb, pileus and
stipe granulose under a lens because of numerous inflated
cells with verrucose walls; stipe separable from pileus
Pseudomycena, p. 44
2. Stipe without a distinct basal bulb or disc, not readily separable from pileus (small species have slightly clavate stipes
inserted on substratum)............................... 3
3. Stipe in cross section showing outer gelatinous layer; hence
usually viscid to the touch when fresh... Glutinipes, p. 401
3. Stipe not as above.................... Eumycena, p. 60
1 Murrill used the name "Mycena" for the fungi belonging to Bolbitius of the
Friesian system, and "Prunulus S. F. Gray" for the species here placed in Mycena.
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