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

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The North American Species of Pholiota

and equally broad at apex, subtibiiform as in some species of Galerina,
etc., their content yellow to orange-brown in KOH. Caulocystidia 36-48
X 5-8 a., cylindric-capitate to fusoid-ventricose.
Gill trama subparallel to interwoven, cells 5-12 (finally) with thin
smooth walls, the layer bright yellow in KOH; subhymenium of narrow
compactly arranged non-gelatinous hyphae also yellow in KOH. Pileus
cutis a collapsed trichodermium of non-gelatinous thin-walled smooth
hyphae, 6-15 /u diam., with walls ochraceous in KOH (on isolated cells,
or in masses of cells fulvous), cells mostly elongated and end-cells clavate
to cystidioid; hypodermial hyphae arranged compactly in a layer about
the color of the context. Context with an orange-fulvous layer toward the
hymenophore of ochraceous somewhat refractive but not gelatinous
hyphae above. Clamp connections present. All hyphae inamyloid.
HABIT, HABITAT, AND DISTRIBUTION: On dead hemlock, New York,
August. Type studied.
OBSERVATIONS: This species is distinguished from P. curvipes by its
odor and taste, and more subtibiiform cells as caulocystidia. The figures
are from the type.
19. Pholiota minutula sp. nov.
Illustrations: Text figs. 26-27.
Pileus 2-6 mm latus, convexus, siccus, fibrillosus, sordide ochraceobrunneus. Lamellae latae, confertae, vel subdistantes, argillaceae demum
fulvae. Stipes 2-3.5(4) mm longus, -1 mm latus, fibrillosus. Vellum luteobrunneum. Sporae 7-9 x 5-6 pt, subtruncatae. Pleurocystidia desunt.
Cheilocystidia 26-40 x 4-7 p., anguste clavata vel subfilamentosa. Specimen typicum in Herb. Univ. Mich. conservatum est; legit prope Dexter,
Mich. 5 Oct. 1944, Smith n. 34229.
Pileus 2-6 cm broad, convex becoming broadly convex, surface dry
and densely fibrillose, the fibrils fringing the margin for a time after the
veil breaks, dingy yellow-brown fresh, drying dingy clay-color.
Lamellae broad, close to subdistant, adnate or with a decurrent
tooth, dingy tan becoming dull rusty brown, edges slightly crenulate.
Stipe 2-3.5 (4) mm long, less than 1 mm thick, shaggy-fibrillose from
veil fibrils and colored about like the pileus, apex pruinose.
Spores rusty cinnamon in KOH under the microscope, 7-9 X 5-6 pu,
wall up to 0.5 /, thick, smooth, elliptic to ovate in face view, elliptic to
obscurely inequilateral in profile, with a distinct apical pore causing apex
to appear slightly truncate in large spores.
Basidia 24-30 x 6-7.5 u/, 4-spored, hyaline in KOH, clamped at base.
Pleurocystidia none. Cheilocystidia 26-40 x 4-7 pu, flexuous-filamentous
to narrowly clavate or near base slightly ventricose, thin-walled, smooth,
hyaline or ochraceous in KOH. Pileus cutis of appressed non-gelatinous
tubular hyphae 2-5 p. diam., ochraceous in KOH and with tawny incrustations arranged in a variable pattern. Context hyphae mostly hyaline to