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

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The North American Species of Pholiota

Spores 6-7.5 x 3.7-4.5 /,, smooth, germ pore present as a minute
hyaline spot under highest magnification; dull cinnamon in KOH,
slightly paler in Melzer's reagent, in face view elliptic to broadly elliptic
or ovate; in profile subovate to slightly bean-shaped; wall relatively thin.
Basidia 4-spored, 20-25 x 6-7.5 /u, hyaline in KOH, yellowish in
Melzer's reagent, clavate. Pleurocystidia abundant, 55-82 X 9-15 (20) /,
fusoid-ventricose with the apex subacute to obtuse, smooth, content often
colloidal and ochraceous in the neck, ventricose portion with wall 0.5 -1.5,u thick, wall of neck often flexuous. Cheilocystidia 30-55 (60) x
10-15 (20) ut, utriform to subfusoid with apex obtuse, thin-walled, content often ochraceous, smooth. Caulocystidia 42-60 x 7-20 /. fusoidventricose to subfusoid, similar to cheilocystidia and often with ochraceous content.
Gill trama of a central area of parallel to subparallel hyphae with
hyaline to yellowish thin smooth walls, the cells long or short and 4-9 /x
diam., but inflating in age; subhymenium gelatinous, hyaline, of interwoven narrow hyphae. Pileus cutis a gelatinous layer usually over 100 /u
thick, of narrow (2-3 u/) mostly incrusted tubular hyphae hyaline to
yellowish in KOH; hypodermium a dark rusty brown (in KOH) layer
of floccose heavily incrusted hyphae with cells 4-15 u/ diam. Context
hyphae interwoven, the cells greatly inflated, thin or with slightly thickened walls, hyaline to yellowish in KOH. All hyphae inamyloid. Clamp
connections present.
HABIT, HABITAT, AND DISTRIBUTION: Scattered on humus under pine,
Oregon and California.
OBSERVATIONS: This species differs from P. ferrugineo-lutescens in
the more bean-shaped spores in profile view, and in more of the pleurocystidia having subacute to obtuse apices. In the dried specimens the
veil dries to resemble a thin-sheet of plastic over the gill cavity. For further comment see P. ferrugineo-lutescens.
MATERIAL EXAMINED: CALIFORNIA: Lanphere 18. OREGON:
Smith 3560, 9218, 9285 (type).
135. Pholiota decorata (Murr.) comb. nov.
Gymnnopilus decoratus Murrill, Mycologia 4: 251. 1912.
Flammula decorata (Murr.) Murrill, Mycologia 4: 262. 1912.
Illustrations: Text figs. 287-288; pls. 63-64, 79b.
Var. decorata
Pileus 3-7 (9) cm broad, obtuse to convex when young, expanding
to umbonate with a spreading margin, or nearly plane, disc dark vinaceous brown ("natal-brown," "army-brown" to "cameo-brown" at first,
fading to near "fawn-color") the margin pallid to avellaneous, in age
often "Isabella-color," surface glutinous to viscid, with numerous to
scattered rows of concentrically arranged fibrillose scales above the gela