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

166

The North American Species of Pholiota

their color. The caulocystidia are remarkable for the variation in shape
(fig. 116). It appears to be related to P. caespitosa and P. lutescens.
MATERIAL EXAMINED: TENNESSEE: Hesler 9641, 13094 (type),
Gatlinburg, November 8, 1942.
83. Pholiota prolixa sp. nov.
Illustrations: Text figs. 117-119; 120; pls. 33, 70a.
Pileu.s 1.5-4(6) cm latus, obtstuss dem11rn convexius vel late Iumbonatus, viscidus, vel glutinosus, glaber, melleus vel ag d centrum sordide
argillaceus. Contextus cartilagineus, luteolous. Lamellae adnatae angustae,
confertae, lutcolac dem7um s'ubcinnamorneae. Stipes 3-5 cm longuis, 1.5-4
mnm crass.us, aequalis, luteonsls, dlorsum.sulbf7ulvus, fibrillo.se sqnuamulo.sls.
Sporae 6-8 x 3 —(4.5) pL. Chrysocystidia 26-40 x 6-12(15) Fi, fusoide ventricosa vel clavalo-mucronata. Specimen typicum1 in Univ. of Mich. conscrvatumn est; legit prope. Lakeland, Michigan, 4 Oct. 1936; Smith 5027.
Pileus (1.5) 2-4(6) cm broad, broadly convex with an incurved
margin, in age broadly convex-depressed with a decurved margin, "honeyyellow" to "yellow-ocher" over all when young, in age the margin paler
and the disc "ochraceous-tawny," glabrous, glutinous, margin somewhat
appendiculate from the submembranous veil, often appearing fibrillosestreaked beneath the gluten. Context cartilaginous tough, yellowish; odor
not distinctive, taste slightly disagreeable.
Lamellae adnate, pale yellow to pallid, slowly becoming dull brownish with a slight chocolate shade, crowded, narrow (3 mm), tapering
outward, edges becoming slightly eroded.
Stipe 3-5 cm long, 2-4 mm thick at apex, narrowed downward,
hollow, rigid-fragile, yellowish over apical region, sordid tawny below,
with scattered patches of fibrils to appressed fibrillose-squamulose below,
annular zone interrupted and soon evanescent, punctate-fibrillose over
apex.
Spores (5.5) 6.5-8 (9) X 3.5-4.5 (5) /t, smooth, apical pore very minute (under 1.4 NA ob.), shape in face view elliptic to ovate, in profile
elliptic to obscurely inequilateral; yellowish tawny revived in KOH,
merely ochraceous in Melzer's reagent; wall moderately thick (about
0.25-0.3 /L); apex not truncate.
Basidia 16-22 (26) x 4-5 (6) ft, 4-spored, clavate, yellowish in KOH
and Melzer's reagent. Pleurocystidia of two types: 1) chrysocystidia 32-45
x 8-12 (15) /u, with a broad basal region, ventricose above and tapered
to a subacute apex rarely merely clavate to elliptic with a pedicel, with
a large amorphous highly refractive hyaline inclusion, the inclusion
orange-brown to reddish in Melzer's reagent; 2) a few pedicellate-ellipsoid
and completely filled with flavous homogeneous pigment, 26-35 X 7-11 Fu.
Cheilocystidia of two types; 1) similar to chrysocystidia on gill faces and
2) cylindric-obtuse to narrowly ventricose at base, 25-40 x 3.5-6 (8) F,