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

Smith ~ Hesler

201

simple matter to visualize P. barrowsii as a hybrid between P. squarrosoadiposa and P. squarrosoides.
102. Pholiota squarrosoides (Pk.) Saccardo Syll. Fung. 5: 750. 1887.
Agaricus (Pholiota) squarrosoides Peck., New York State Mus. Ann.
Rept. 31: 33. 1879.
Hypodendrum squarrosoides (Peck.) Overholts, North Amer. Fl. 10:
278. 1932.
Illustrations: Tex figs. 204-207; pls. 45-46.
Atkinson, Stud. Amer. Fungi, 2nd ed., pl. 48.
Harper, Wisconsin Acad. Sci. Arts 8c Letters 17, pls. 36, 37.
Overholts, Annals Mo. Bot. Gard. 14, pl. 22.
Peck, N. Y. State Mus. Ann. Rept. 54, pl. 73, figs. 6-15.
Pileus (2.5) 3-7 (11) cm broad, obtuse becoming broadly umbonate
to convex, at times nearly plane, color white to whitish when fresh, becoming only slightly tinged with cinnamon in age, or remaining whitish,
the margin often fringed with veil remnants, surface viscid beneath the
scales, the scales dry, recurved to squarrose, pale tawny ("tawny" to
"ochraceous-tawny"), scattered near the margin, often crowded over the
disc. Context thick, whitish, rather pliant; odor and taste not distinctive.
Lamellae adnate but becoming sharply adnexed, close to crowded,
moderately broad (more or less 5 mm), broadest at base and tapering
toward the margin, whitish at first, slowly changing to dull rusty brown
as the spores mature, sometimes with brighter rusty stains.
Stipe (4)5-10(14) cm long, 5-10(15) mm thick, dry, fleshy-pliant,
lower two-thirds covered by coarse, recurved, ochraceous tawny, persistent scales, tinged pale buff between the scales or with a tendency to
stain rusty-brown near the base, ground color typically pallid, apical
region whitish and silky, equal, stuffed or solid. Annulus superior, pallid,
often more fibrillose than membranous, often evanescent.
Spores 4-5.5 (6) x (2.5) 3-3.5 uX, smooth, apical pore not evident;
shape in face view ovate to broadly elliptic, in profile, subelliptic to
obscurely inequilateral; in KOH pale dull cinnamon, in Melzer's reagent
paler; wall less than 0.25,x thick.
Basidia 17-22 (27) X 4-6 ji, 4-spored, narrowly clavate, hyaline in
KOH and in Melzer's reagent scarcely colored. Pleurocystidia abundant,
(25) 30-50 (65) x (6) 8-15 (18),u, clavate, clavate-mucronate, fusoidventricose with an apical mucro or elongation, or wavy in outline and
one of the above basic shapes; wall thin, smooth, hyaline in KOH; content homogeneous-opaque but hyaline or nearly so (no refractive inclusion), rarely secondarily septate, at times when poorly revived seen to
have an ochraceous-brown content. Cheilocystidia 26-40 (50) x 5-11 (13)
ui, clavate, fusoid-ventricose, or resembling the pleurocystidia in shape
and then with similar content, none seen with a refractive-amorphous