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

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The North American Species of Pholiota

velopment of the gelatinous subhymenium, and the thin coating of buff
fibrils on the stipe appear distinctive along with spores which are up to
9 pu long.
127. Pholiota subminor sp. nov.
Illustrations: Text figs. 504-505; 507.
Pileus 2-3 cm latus, convexus, viscidus, glaber, ad centrum vinaceobrunneus, ad marginem subluteus; contextus subluteus, sapor mitis, inodorus; lamellae confertae latac, adnatae, luteolae demum subfulvae;
stipes 2-3 cm longus, 2-3.5 mm crassus, sursum subluteus, deorsum sordide brunneus; sporae 7-9 x 5-6 p,, leves, ovatae; pleurocystidia 55-80
x 9-15 p. fusoide ventricosa, saepe crassotunicata. Specimen typicum in
Herb. Univ. Mich. conservatum est; legit in querci, Oregon Caves Road,
prope Cave Junction, Ore., 1 Dec. 1937. Smith 9294.
Pileus 2-3 cm broad, convex expanding to plane, surface slimy viscid
(slime layer thin), glabrous, on the disc dingy to bright vinaceous brown,
more yellowish to the margin (pallid in sporulating basidocarps, sulphur
yellow in sterile ones). Context pallid to yellowish, odor and taste not
distinctive.
Lamellae close, broad adnate, yellowish becoming dingy ochraceous
tawny but sulphur yellow in sterile caps, edges even.
Stipe 2-3 cm longus, 2-3.5 mm thick, yellowish above veil line, soon
dingy yellowish-brown below, brighter yellow if gills were sterile, veil
yellowish, cortinate, leaving an apical evanescent zone.
Spores 7-9 x 5-6 p., smooth, apical pore distinct but apex not
truncate; shape in face view ovate to elliptic; in profile mostly subelliptic,
color in KOH rather bright ochraceous tawny, in Melzer's reagent about
the same; wall about 0.25 /u thick.
Basidia 4-spored, 17-20 X 6.5-8 pt, subclavate, many ochraceous in
KOH (content colored). Pleurocystidia 55-80 x 9-15 pA, fusoid ventricose,
tlhe neck with walls up to 1.5 pu + thick in some, apex 4-6 pu broad, obtuse,
content coagulated and ochraceous in KOH, or hyaline and homogeneous,
smooth; cheilocystidia similar to pleurocystidia and with thinner walls
(- 0.5 pu thick). Caulocystidia present only near stipe apex and similar
to cheilocystidia.
Gill trama of subparallel hyphae with cells inflated to 10-20 p.,
walls thin and smooth, yellow to hyaline in KOH; subhymenium a
gelatinous zone of branched narrow hyphae. Pileus cutis a gelatinous
pellicle of loosely arranged yellowish hyphae with disintegrating walls in
KOH, hyphae 2-4.5 pL diam., hypodermium of interwoven non-gelatinous
hyphae with ochraceous incrusted walls, the cells inflated to 15 u (-+).
Context hyphae interwoven, smooth, yellow in KOH, cells inflated. Clamp
connections present.
HABIT, HABITAT, AND DISTRIBUTION: Gregarious on an oak log, near
Oregon Caves, Ore. Dec. 1, 1937. Smith 9294, type.