North American species of Mycena.

EUMYCENA: TYPICAE

285

which exists in the use of the names M. vitilis and M. filopes in Europe.
This expedient has much to recommend it. Peck thought the fungus
belonged in the section Basipedes of Fries, but his view does not
appear to be correct. In the specimen studied the stipe tissue seemed
to be continuous with that of the pileus, and the strigose base of the
stipe was also not typical for Basipedes.
137. MYCENA IODIOLENS Lundell
Uppsal. Hymen.-Flora, 22: 7. 1932
Mycena graveolens Kauffman and Smith, Pap. Mich. Acad. Sci., Arts, and
Letters, 17: 181. 1933.
Illustrations: Plates 54 B, 55; Text fig. 33, nos. 9-10 (p. 275).
Pileus 5-15 (25) mm. broad and high, obtusely conic to narrowly
campanulate, becoming broadly campanulate or expanded-umbonate, the umbo sharp or obtuse and occasionally papillate, the
margin appressed against the stipe when young and often flaring somewhat at maturity, sometimes crenate, a distinct narrow sterile margin
present in nearly all specimens, surface conspicuously hoary when
young, soon naked, hygrophanous, when moist "fuscous" to "light
drab" around the umbo, near "tilleul buff" on the margin, striate,
fading to pale drab gray or "vinaceous fawn," the umbo persistently
darker on the disc, pallid toward the margin and fading to pale gray
or gray with a vinaceous tinge; flesh membranous, thin, moderately
fragile, pallid, taste not distinctive, odor lacking at first but shortly
after specimens are gathered becoming strong and similar to that of
iodoform; lamellae ascending and narrowly adnate, close, 22-26 or up
to 32 reaching the stipe, usually very narrow but subventricose in
large caps (1.5-3 mm.), whitish or tinged gray, edges even and pallid;
stipe 5-12 cm. long, 1-2.5 (3) mm. thick, equal, cartilaginous and
tough but becoming flaccid, sometimes moderately fragile, tubular,
hoary at first, soon polished except for the white-strigose base, "avellaneous" or "olive brown," often pallid toward the apex, sometimes
"ecru drab" toward the apex and "cinnamon drab" below.
Spores ovoid to broadly ovoid in two-spored forms, ellipsoid in
four-spored forms, 8-11 X 5-7, or 7-10 X 4-6 1A, amyloid; basidia
18-22 X 5-6,; cheilocystidia forming a conspicuous sterile band
along the gill edge (edge heteromorphous), saccate, and without a
pedicel, 18-22 X 12-15 u, hyaline, apices studded with short rodlike