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

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The North American Species of Pholiota

2.5-4.5 ui diam., many with ochraceous incrustations on the wall; hypodermium a rusty brown (in KOH) layer of non-gelatinous hyphae with
smooth or incrusted walls. Context hyphae compactly arranged, hyaline,
thin-walled, cells inflating by maturity, oleiferous hyphae present. Clamp
connections present.
HABIT, HABITAT, AND DISTRIBUTION: Gregarious on wet sand (apparently from buried wood) Mosquito Bay, Priest Lake, Idaho. Oct. 5, 1964.
Smith 71058, type.
OBSERVATION: This species is obviously a segregate of P. scamba but
excellent specimens of all stages were present and it differs in the truly
slimy pileus and very reduced veil. The pleurocystidia especially when
young remind one of chrysocystidia in being clavate-mucronate but by
maturity a distinct neck develops and they are fusoid ventricose. They
lack the content characteristic of chrysocystidia when revived in KOH.
168. Pholiota subdefossa sp. nov.
Pilcus 8-17 mm latus, late convexus, siccus, fibrillosus, albo-luteus;
lamellae pallidae demum fulvae, latae, s bdistantes, adnato-decnrrentes;
stipes 1-1.5 cm longus, 1-2 mm crassus, pallide lutezis; sporae 9-11 x 5-6
i., lacte fulvae (in KOH). Pleuzrocystidia 20-35 x 8-15 /f, subovata vel
clavato-mucronata. Specimen typicum in Herb. Univ. of Mich. conservatum est; legit prope Sinclair, Maine, 17 Juli 1956, Bigelow 3331.
Pileus 8-17 mm broad, broadly convex with an incurved margin
expanding to plane or nearly so, at times with a low broad umbo, surface
dry and unpolished, matted fibrillose under a lens, margin opaque and
even, color cream-buff varying to pale yellow on margin, colors slightly
more intense on disc, hygrophanous and fading to whitish; context thin,
whitish, no odor or taste.
Lamellae adnate with a short decurrent tooth, broad, close to subdistant, not forked or intervenose, arched, 2-3 mm broad, edges undulating and finely eroded.
Stipe 1-1.5 cm long, 1-2 mm thick, equal, curved, terete, central,
hollow, fibrous, with a tuft of tomentum at base, surface fibrillose, apex
with fine filaments from veil, when young, concolorous with pileus.
Spores 9-11 x 5-6 uA, smooth but tending to be obscurely angular,
apical pore present but minute (apex not truncate); color in KOH
rusty-fulvous, in Melzer's paler; shape in face view ovate to subelliptic;
in profile obscurely inequilateral to suboblong; wall about 0.25-0.3 /I
thick (thickest in KOH).
Basidia 4-spored, 20-26 x 8-9, clavate, mostly yellow in KOH.
Pleurocystidia rare, 20-35 x 8-15 /u, ovate, clavate-submucronate to subelliptic, content homogeneous, yellow in KOH, wall thin and smooth,
cheilocystidia similar to pleurocystidia but some seen with adhering
debris. Caulocystidia versiform but mostly like the cheilocystidia.
Gill trama of ochraceous-walled hyphae with inflated cells; sub