North American species of Mycena.

196 NORTH AMERICAN SPECIES OF MYCENA

members of the section Lactipedes and the marginate species in the
subgenus Glutinipes, are excluded from this section.
Within the Calodontes the first subsection, the Granulatae, is
formed by a group of very closely related species intermediate between
the Adonidae and members of the section Typicae. In the subsection
Ciliatae two lines are present, one characterized by a more or less
lignicolous habitat and the other by a terrestrial one. Their relationships to other sections are the same as those of the Granulatae; they
join the brightly colored forms of the Adonidae with smooth cystidia
to the gray forms of the Typicae with similar sterile organs.
KEY TO SUBSECTIONS OF CALODONTES
1. Gill edges with roughened cheilocystidia................. Granulatae
1. Gill edges with smooth cheilocystidia or cheilocystidia variously
branched at times............................... Ciliatae, p. 206
SUBSECTION GRANULATAE
KEY TO SPECIES
1. Pleurocystidia abundant, fusoid-ventricose, enlarged portion smooth
or roughened; gills edged sordid-rose color........... 94. M. rosella
1. Pleurocystidia clavate-echinulate (when present).................. 2
2. Subcespitose to scattered, growing among oak leaves; base of stipe
densely strigose................................ 93. M. flavescens
2. Gregarious under conifers on needle beds.......................... 3
3. Pileus dark fuscous with tinge of sulphur yellow, at least along
margin; gills edged with pale sulphur yellow......... 92. M. elegans
3. Pileus, if fuscous, with strong orange cast; gills edged with "cadmium
orange," at least in young carpophores... 91. Mi. aurantiomarginata
3. Pileus flame-scarlet to brilliant orange, occasionally fading to yellow
or whitish; gills edged with flame-scarlet, at least when young
90. M. strobilinoides
90. MYCENA STROBILINOIDES Peck
Ann. Rep. New York State Mus., 45: 23. 1893
Prunulus strobilinoides Murrill, North Am. Flora, 9: 337. 1916.
Prunulus aurantiacus Murrill, ibid., p. 336.
Mycena aurantiaca Murrill, Mycologia, 8: 220. 1916.