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

Smith ~ Hesler

243

126. Pholiota bakerensis sp. nov.
Illustrations: P1. 60a.
Pileus 2-5 cm latus, obtusus demum convexus, deinde planus vel
leviter depress.s, "ochraceous-tawny," margine paene "avellaneous," viscidus, ordines agglutinatarum squamularum circum idem centrum gerens.
Caro pallido-"avcllaneous"; gus.ts mitis, odor leviter fragrans. Lamenllae
adnatae, "tawny-olive," confertae. Stipes 3-5 cm longus, 3-5 mm crassu.s,
pallidis, fibrillosu.s, infra "clay-color." Sporae 7-9 x 4-5 i, ellipsoideae
demnum ovoideac, leves. Plei rocystidia 50-70 X 9-14 iL. Cheilocystidia
30-40 x 9-12 iL, fusoide ventricosa demum subellipsoideo-pedicellata.
Cuticuila gelatinosa. Specimen typicum in Herb. Univ. Mich. conservatulm; ccrtmn prope Mt. Baker, Washington, 8 Sept. 1941, Smith 16727.
Pileus 2-5 cm broad, obtuse to broadly convex young, plane or disc
broadly and shallowly depressed in age, the margin usually arched, surface viscid, opaque, "ochraceous-tawny" on disc, near "avellaneous" over
marginal area, with one or more concentric rows of agglutinated fibrillose
squamules. Context thin and pliant, pale watery avellaneous; taste mild,
odor faintly fragrant.
Lamellae adnate, short decurrent by a tooth, "tawny-olive" 3-4 mm
broad, about equal, close, about 32 reach the stipe and 2 tiers of lamellulae between each, edges serrulate.
Stipe 3-5 cm long, 3-5 mm thick, equal, solid or hollowed by worms,
fleshy-pliant, surface pallid from a thin coating of pale buff fibrils, with
an evanescent apical fibrillose zone, more or less glabrescent and thin,
"clay-color" at least over lower part.
Spores 7-9 X 4-5 at, elliptic to obscurely ovate in face view, obscurely
inequilateral to obscurely bean-shaped in profile, dull tawny in KOH,
smooth, apical pore minute.
Basidia 4-spored, 18-20 x 6-7 Iu, yellow in KOH in sections of
hymenium. Pleurocystidia 50-70 X 9-14 JL, abundant, fusoid-ventricose,
apices obtuse and often with refractive particles in the neck and apex,
yellow in KOH from the pale colored wall which is very slightly thickened in lower neck and upper ventricose portion. Cheilocystidia 30-40
x 9-12 /u, fusoid-ventricose to nearly elliptic-pedicellate, some with refractive content (as in chrysocystidia), pale yellow in KOH, or some
similar to pleurocystidia in size or shape.
Gill trama with a floccose central strand flanked by a very narrow
subgelatinous subhymenial layer as revived in KOH (not evident on all
sections). Pileus trama floccose-interwoven and hyaline to yellowish in
KOH, no distinct hypoderm showing as a colored layer. Cuticle gelatinous, of appressed interwoven yellow (in KOH) incrusted hyphae, 4-6 /i
in diameter. Clamp connections present.
HABIT, HABITAT, AND DISTRIBUTION: Scattered on conifer sticks, Washington, September, Smitli 16727, type.
OBSERVATIONS: The lack of a colored hypoderm, the very weak de