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

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The North American Species of Pholiota

spicuous, content as revived in KOH homogeneous, hyaline. Cheilocystidia 22-35 x 7-12 /L, fusoid-ventricose to ventricose- capitate, usually
more ochraceous than the pleurocystidia, smooth, thin-walled. Caulocystidia none.
Gill trama of subparallel floccose hyphae ochraceous in KOH, with
tlin smooth walls, cells 3-10 /, diam., subhymenium of narrow subgelatinous hyphae in a poorly defined layer. Pileus with a tangled layer of
encrusted hyphae 4-9 /. diam., those at surface collapsing as if gelatinized
(hence surface may be viscid); hypodermial region more compact and
highly colored. Context hyphae poorly revived but interwoven and cells
inflated. Clamp connections present. All hyphae inamyloid (merely
ochraceous in Melzer's reagent).
HABIT, HABITAT, AND DISTRIBUTION: On soil, MXichigan and Pennsylvania, September-November. Rare.
OBSERVATIONS: The distinctive feature of tlis species is the differentiation at tile spore apex (fig. 71). It is not conspicuotls, but we believe
significant taxonomically. In view of the description of the pileus as
viscid (by Kauffman) we are inclined to interpret the collapsing surface
hyphae as producing this effect, but the anatomical basis for the viscid
character is to be regarded as questionable lhere. TIle pleurocystidia are
so widely scattered and inconspicuous that their presence is of little help
to the taxonomist. It is a peculiar fungus which should be critically restudied from fresh material.
MATERIAL EXAMINED: MICHIGAN: Type, Kauffman, Ann Arb)or.
Nov. 12, 1911; PENNSYLVANIA: collected by Kauffman.
35. Pholiota kalmicola (Mullrr.) comb. nov.
Hebelonma kalmicola Murrill, North Amer. Fl. 1(: 218. 1917.
Illustrations: Text figs. 72-74.
Pileus 2.5-3.5 cm broad, convex expanding to convex-depressed, not
umbonate, uniformly yellowish white to cream colored, surface moist,
slightly viscid, subglabrous, margin entire and concolorous, not striate.
Context thin; odor none, taste slightly unpleasant.
Lamellae adnexed or sinuate, yellowish white to dirty white, very
broad, moderately close, thin, entire and concolorous on the edges.
Stipe 5 cm long, 3 mm thick, slender, cylindric, equal, fibrillose,
slightly darker than the pileus, hollow.
Spores 7-9 x 4-5 /. (9-12 x 5-6 ux), smooth, apex differentiated
much as in P. serotina, shape in face view oblong to elliptic for 4-spored
basidia, suboblong and obscurely angular for those from 2-spored basidia,
in profile oblong to subelliptic; tawny or paler in KOH and about the
same color in Melzer's reagent; walls 0.3-0.4 u thick.
Basidia 17-21 x 6-8 /x, 4-spored and 2-spored, utriform, hyaline to
yellow in KOH and in Melzer's reagent. Pleurocystidia scattered, 18-26