North American species of Mycena.

EXCLUDED AND DOUBTFUL SPECIES

477

mens under this name in the Atkinson Herbarium (14265) and from
an Ellis & Everhardt collection at the New York Botanical Garden
(October 3, 1887). They resemble a small M. epipterygia but have
spores 7-9 X 3-4 tj. The cheilocystidia are the roughened type,
and about half the pileus trama (in revived mounts) is gelatinous.
This form deserves further study. It may be only a depauperate
form of M. epipterygia. Mains found the same form in northern
Michigan growing along with M. epipterygia var. lignicola.
Mycena cohaerens (Fr.) Gillet. See Marasmius cohaerens.
Mycena collariatus (Fr.) Quelet, Champ. Jura et Vosges, p. 244. 1872.
Reported from North America, but insufficiently known.
Mycena conferruminata (Berk. & Mont.), Saccardo, Syll. Fung., 5:
258. 1887.
Agaricus (Mycena) conferruminatus Berkeley & Montagne, Syll. Crypt.,
110. 1856.
"Pileo nutante campanulato purpureo-flavescente striato, margine
crenulato; stipi[ti]bus fistulosis striolatis concoloribus mycelio concretis; lamellis linearibus affixis albis.
"Hab. Ad. terram fragmentis ligni corrupti conspurcatam, julio.
Columbus: Sullivant, Icon., no. 112.
"Desc. Pileus initio digitaliformis, mox campanulatus, membranaceus, radiatim striatus, vivus et, ex icone, praesertim centrum
versus purpurascens, luteo flavoque tinctus, siccus fuscescens, centro
depresso umbonulatus, 10-12 millim. altus et latus, margine demisso
crenulatus. Stipites fistulosi, 5-7 centim. longi, millimetrum et ultra
crassi, a basi ultra medium per mycelium copiosum album coaliti,
pileo subconcolores, apice flexi, ita ut nutare videatur pileus. Lamellae postice affixae nec decurrentes, medio vix millim. latae, antice
attenuatae, albae, nec confertae, nec distantes, post exsiccationem
madore flexuosae. Hymenium 2 centimillim. crassum, e sporophoris
clavulatis conflatum. Sporae albae, hyalinae, globosae, 0 mm., 005
diametro metientes.
Obs. Haecce species prope A. adonidem in systemate locanda,
quorum discrimina exponere pro supervacaneo habeo."
This species has been excluded by other American authors. I have
been unable to obtain any additional information on it. The portion