The North American species of Pholiota, by Alexander H. Smith and L. R. Hesler.

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The North American Species of Pholiota

pale tawny in KOH individually, paler in Melzer's reagent individually
but in groups slightly dextrinoid.
Basidia 20-24 x 5-7 Iu, clavate, 4-spored, hyaline in KOH, yellowish
in Melzer's reagent. Pleurocystidia rare to scattered, most abundant in
hymenial area between the gills, 35-50 x 2-3 x 3-4 Iu, very narrowly
ventricose at base and tapered to an acute to subcapitate apex, the neck
flexuous, rarely the apical region moniliform to variously contorted,
hyaline, thin-walled, smooth. Cheilocystidia 30-50 x 4-7 X 3-4 p.,
hyaline, thin-walled, smooth, more or less ventricose at base, neck narrow
and flexuous, often somewhat moniliform in apical third. Caulocystidia
none located.
Gill trama of subparallel non-gelatinous hyphae with inflated cells,
the cells shorter near the pileus trama and more elongate toward the gill
edge, 4-14 pu or more wide, walls smooth, thin, hyaline to yellowish in
KOH, and only slightly more yellowish in Melzer's reagent. Pileus cutis
a thin layer of appressed gelatinous narrow (2-3.5 pu) tubular thin-walled
hyphae. Context hyphae 4-12 Lu diam., walls brownish to hyaline in
KOH, hypodermial area not structurally differentiated. Clamp connections present. All hyphae inamyloid.
HABIT, HABITAT, AND DISTRIBUTION: On rotten wood, Tahquamenon
Falls State Park, Michigan, Luce County, July 6, 1959. Smith 60944, type.
OBSERVATIONS: This species is smaller than P. veris and many of the
cheilocystidia are almost tibiiform as in stirps Sideroides of Galerina.
This feature at once distinguishes it from P. veris microscopically, if one
has depauperate specimens of the latter at hand. Here again the species
is not known from more than the type locality and type collection, but
we felt it worthwhile to place it on record because of the cheilocystidia
and the general stature of the Galerina sideroides group-at least in the
larger basidiocarps.
48. Pholiota nigripes sp. nov.
Illustrations: Text figs. 146-148.
Pileus 0.8-3.5 cm latus, late convexus, glabrosus, lubricus, obscure
"buckthorn brown" recens, deinde opacus demum cinnamomo-brunneus
deinde "ochraceous tawny" vel "pinkish buff," margine leviter striatus.
Caro tennuis, aquosa, concolor; odore et gustu mitis. Lamellae depressoadnatae, secedens, furvo-coriaceae recentes, confertae, latae. Stipes 3-6
cm longus, 1.5-2.5 mm crassus, infra brunneus vel niger, sursum pallide
"buckthorn brown," glaber. Velum deest. Sporae 7-9.5 x 3.8-4.5(5.3) pI,
ellipsoideae demum oblongae, leves, truncatae. Pleurocystidia desunt;
cheilocystidia 27-50 x 4-10 pi, fusoidea demum ventricosa, cervix longa,
gracilis, sursum decrescens, apicibus acuta. Cuticula repens. Caulocystidia
27-54 X 4-10 /I, cheilocystidiorum similia. Specimen typicum in Herb.
Univ. Mich.; lectum in Idaho County, Idaho, 27 June, 1962. Smith 65040.