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

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The North American Species of Pholiota

2. Pileus dingy yellow to olive-yellow (finally) on margin and tawny
to dingy yellow-brown on disc........... P. spumosa
2. Pileus bright yellow on margin and disc bay to orange or red 3
3. Stipe 2-4 mm thick; veil fibrillose and copious, yellowish becoming
p allid......................................................................... P. v ela ta
3. Stipe 4-15 mm; veil thin.............................................. 4
4. Caulocystidia absent.......................................... P. vialis
4. Caulocystidia present at stipe apex............... (see P. subflavida also) P. piceina
171. Pholiota baptistii sp. nov.
Illustrations: Text figs. 371-373; 375-376.
Pileus 3-6 cm latis, convex2us demunm late convexus, subviscidus,
glabcr, sordide lutetus, ad centt1rm suLbflilvus. Contextlus luteus. Lamellae
confertac, latac, adnatac, pallidc luteae. Stipcs 3-7 crm loingus, 4-8 mm
crassus, aequalis, sparse fibrillosus, slrslrnm pr iinoszts, pallide liteus,
deorsum subflulvus. Sporac 7-9 x -4-.5(5) J. Plleurocystidia -15-82 x 7-18
tL, tenuitulnicata, ad apicem obtusa vel late obtusa. Specimen typicum in
Herb. Univ. Mich. conservatum est; legit prope Carney Lakes, Ada
Cornty, Idaho, Mr. C. F. D. Baptist, 15 Oct. 1956, (Trtueblood 5-12).
Pileus 3-6 cm broad, convex to nearly plane or with a low umbo,
surface glabrous, slightly viscid, colors dull yellowish (ochraceous) or
over center dull pale tawny, drying to pale yellow except for brownish
disc. Context thin, yellowish, odor and taste not recorded.
Lamellae close, moderately broad, adnate to adnexed, pale yellowish and retaining this tone on drying, edges minutely fimbriate.
Stipe 3-7 cm long, 4-8 mm thick, equal or nearly so, thinly fibrillose; pruinose at apex and yellowish, drying greenish yellow; subfulvous
below but color fading somewhat in drying; veil scarcely leaving an
annular zone.
Spores 7-9 x 4-4.5 (5) /u smooth, wall slightly thickened (~ 0.25 af),
rusty fulvous in KOH and more ochraceous in Melzer's reagent, (much
paler than in KOH), apical pore distinct, some spores obscurely truncate; in face view oblong to elliptic, in profile slightly bean-shaped to
elliptic, more rarely obscurely inequilateral.
Basidia 23-30 x 5-7 /x, 4-spored, clavate, ochraceous in KOH or
paler, merely yellowish in Melzer's. Pleurocystidia 45-82 X 7-18 pt,
narrowly to broadly fusoid-ventricose; walls thin or thickened, in some
to 0.5 ut in ventricose part, smooth, apex obtuse to rounded, content
homogeneous or some with some rod-like crystals, yellow to hyaline in
KOH. Cheilocystidia 35-50 X 9-15 p,, and ellipsoid-pedicellate to clavate
or subfusoid, thin-walled, hyaline or with yellowish content in KOH and
in some the content amorphous and coagulated; some fusoid-ventricose
cells like the pleurocystidia also present. Caulocystidia 40-65 x 10-20,t
ellipsoid pedicellate to clavate, rarely subfusoid, content often of rusty