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

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The North American Species of Pholiota

to obtusely fusoid, walls smooth, thin, content hyaline to yellow. Caulocystidia 30-52 x 6-10 p,, clavate, capitate or mucronate, hyaline to yellow
or pale tawny, walls smooth and thin.
Gill trama with a central strand of yellow subparallel floccose
hyphae 3-9 pt diam., with walls smooth and swelling slightly in KOH,
content not highly colored in Melzer's reagent; subhymenium a broad
well defined gelatinous layer of narrow (2-3 ut) hyaline hyphae. Pileus
trama with a zone of inflated hyphae (almost parenchyma-like in sections) walls in KOH 1.5-2 pt thick, and with a middle line showing as if
two walls were fused, above this the cells with somewhat thickened walls,
this type extending to the cuticular region and all hyphae ochraceous in
KOH; cuticle a thick layer of subgelatinous hyphae 3-5 t diam., smoothwalled, patches of tawny fibrils above this (from the veil) and these not
gelatinous but some of the end-cells cystidioid and 42-56 x 6-12,L.
Clamp connections present. All hyphae inamyloid (none with orange
to red content in Melzer's reagent).
HABIT, HABITAT, AND DISTRIBUTION: On the ground, probably on
buried or exposed wood, New York, New Jersey and Missouri, September.
Type studied.
OBSERVATIONS: Overholts (1924) reports it from the states nanmed
above. Peck (1912) states it is related to Pholiota terrigena Fr. from
which he separated it because of its more slender habit, white flesh,
adnexed lamellae, and more slender stipe. The dried specimens in the
type collection remind one of those of our western form of Pholiota
squarrosa more than any other species, but are not as scaly and there is
gelatinization of the pileus cuticle. P. pe1nningtoniana differs in the more
ovate spores in face view. We regard this species as intermediate between
stirps Sqtlarrosoides and stirps Adiposa.
99. Pholiota penningtoniana sp. nov.
Illustrations: Text figs. 196-198.
Pilcts 3-9 cm latuis, convexus, squarroso-squam ulosus, ad centirum
fulvs17, ad marginem sblu/teus (in siccatis). Lamellae confertae, anglustae,
subdecurrentes, l/teac demium sutbfulvae; stipes 9-12 cm longus, 8-15 mm
crassus, acqualis, squamosus, sursum subluteus, deorsum pallide ftlvits.
Sporae 6-7.5 x 4-4.8(5) pu, leves. Chryso-pleurocystidia 33-52(68) X 7-12
(15) )u, clavato-mucronata. Specimen typicum in Herb. Univ. of Mich.
conservatlum est; legit prope Marquette, Mich. 29 Agug. 1906. L. H. Pennington.
Pileus 3-9 cm broad, convex expanding to broadly umbonate, surface dry and recurved-squamulose as in P. squarrosa, possibly subviscid
in age, color pale tawny on disc, yellowish over marginal area (as dried).
Lamellae crowded, narrow, subdecurrent, yellowish becoming subfulvous (as dried).
Stipe 9-12 cm long, 8-15 mm thick, equal, covered below the apical