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

Smith ~ Hesler

193

Key
1. Spores 6-8 X 4-4.5 F,, oblong to elliptic in face view (see P. angustipes
also)........................................ P. rigidipes
1. Spores smaller or more ovate in face view................................. 2
2. Spores 6-7.5 x 4-4.8 (5) /x, ovate in face view (see P. simulans
also)................. P. penningtoniana
2. Spores 4-6 x 2.5-4........................................ 3
3. Pileus dark grayish brown to dark cinnamon; stipe with scales colored
like those on pileus................................................................................ 3a
3. N ot as above............................................................................................ 4
3a. Stipe not staining when handled............................ P. terrestris
3a. Stipe staining russet when handled.......... P. subcostanea
4. Pileus with coarse tawny scales........................................ 5
4. Pileus with fine scales paler than in above choice....................... 6
5. Inner veil yellow; pileus ground color ochraceous..... P. barrowsii
5. Inner veil white; pileus ground color pallid............ P. squarrosoides
6. Spores 4-5 X 2.5-3 i,..................................... P. romagnesiana
6. Spores 5-6.5 (7) x 3.5-4 (4.5) /U (see P. simulans also)
P. angustifolia
98. Pholiota rigidipes Peck, New York State hMus. Bull. 157: 31.
1912.
Illulstrations. Text figs. 192-195.
Pileus 4-8 cm broad, broadly convex, sometimes slightly and broadly
umbonate, pale yellow or buff, viscid; with obscure appressed fibrillose,
brownish squamules which are more conspicuous in the center; obscurely
striate when dried. Context thin, white, tinged yellow next to the
lamellae; taste mild.
Lamellae adnexed or adnate, brownish ferruginous when mature,
close, rather broad (3-6 mm), thin.
Stipe 5-9 cm long, 4-6 mm thick, white and pruinose at the apex,
pallid and floccose-squamulose below, or nearly glabrous, rigid, flexuous,
equal, stuffed or hollow. Veil leaving an evanescent annulus.
Spores 6-8 x 4-4.5 /.t, smooth, apical pore distinct but apex not
truncate; shape in face view oblong to elliptic, in profile much the same
but a shade narrower, rarely slightly bean-shaped; color in KOH near
pale ochraceous tawny, in Melzer's reagent paler and more ochraceous;
wall about 0.25,L thick.
Basidia 4-spored, 26-30 x 6-7 u, ochraceous in KOH, paler in
Melzer's reagent, narrowly clavate. Pleurocystidia 30-40 x 8-14 /u,
clavate-mucronate to clavate, more rarely somewhat fusoid-ventricose,
content tawny in KOH in most but some hyaline and evenly refractive,
mostly buried in hymenium (no true chrysocystidia seen). Cheilocystidia
small, 18-27 X 5-9,u, obscurely fusoid-ventricose to suboblong-pedicellate