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

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The North American Species of Pholiota

broad (5-8 mm), "pinkish-buff" young becoming "cinnamon-buff" and
finally "buffy-brown" (olive-brownish).
Stipe 5-7 cm long, 6-12 mm, equal, base slightly bulbous, surface
covered by the veil forming a sheath of floccose fibrils, sheath terminating
in an annular zone, whitish above the sheath and silky-pruinose, apex
striate from gill-lines in some.
Spores in deposit (on annulus, nearly fuscous-Kauffman), (5.5)
6-7.5 (8) x 3.5-4 (4.5),u, smooth, apical pore minute, in face view
oblong to narrowly ovate and often with a truncate base, in profile
obscurely bean-shaped to nearly oblong, in KOH pale ochraceous, in
Melzer's reagent nearly hyaline, wall thin (less than 0.25 /x).
Basidia 4-spored, 20-24 x 5-6.5 /u, content ochraceous in KOH,
paler in Melzer's. Pleurocystidia 43-68 x 9-14,u fusoid-ventricose, neck
7-10 / thick and apex obtuse to rounded, wall thin, smooth and hyaline,
content homogeneous or in some "colloidal" in the neck, hyaline to
yellowish. Clieilocystidia similar to pleurocystidia but content in neck
with rod-like hyaline particles.
Gill trama of floccose parallel hyphae hyaline to pale tan in KOH;
subhymenium gelatinous. Pileus cuticle of narrow gelatinous lhyphae
3-4 (L diam., walls yellow to hyaline and smooth to incrusted, hypodermial zone briglt ochraceous in KOH, the hyphae floccose. Context
hyphae hyaline to yellow in KOH, interwoven, walls thin and smooth.
Clamp connections present. All hyphae inamyloid.
HABIT, HABITAT, AND DISTRIBUTION: On duff under spruce-fir, near
Tolland, Colorado, Sept. 17, 1920, C. H. Kauffmann. 9500 ft. elevation;
type.
OBSERVATIONS: The outstanding feature of this species is the pale
ochraceous spores as revived in KOH. They are also more thin-walled
than in most species of Pholiota. In stature it closely resembles P..subln brica.
180. Pholiota subcarbonaria (Mlurr.) comb. nov.
Gynm7opilus subcarbonarins Murrill, Mycologia 4: 256. 1912.
Flamrnlula subcarbonaria Murrill, Mycologia 4: 262. 1912.
lllutstnrtions: Text figs. 399-401.
Pileus gregarious, 3-4 cm broad, convex to expanded, rarely umbonate, red to bay, yellow on the margin, sometimes darker at the center,
rather thin, surface smooth, glabrous, very viscid.
Lamellae adnate or sinuate, pale yellow to ochraceous or fulvous,
not crowded, rather narrow, inserted.
Stipe 3-4 cm long, 4-8 mm thick, white, somewhat enlarged below,
scaly, hollow. Veil fibrillose, evanescent, not leaving an annulus.
Spores 6-7.5 X 4-4.5 /L smooth; apical pore present but apex not
truncate; shape in face view elliptic to ovate, in profile elliptic to very