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

368

The North American Species of Pholiota

beech logs and debris but not on the wood, Warrensburg, New York,
Sept. 12, 1934. Smith 798, type.
OBSERVATIONS: This species by virtue of small spores and broadly
rounded pleurocystidia appears to be closely related to P. polychroa but
is readily distinct by the rusty to yellow pilei. Its distinctive features in
addition to those relating it to P. polychroa are the typically convex to
depressed pileus, cespitose-gregarious fruiting pattern and moderately
thin veil. We did not find any thick-walled pleurocystidia in any of the
mounts we made, but the presence of so many thick-walled cheilocystidia
causes one to speculate as to whether the same feature will not be found
eventually in the pleurocystidia of some collections of this species.
201. Pholiota lurida sp. nov.
Illustrations: Text figs. 458-462.
Pileus 3-7 cm latus, se expandens, margine "cartridge-buff," vel
"cream-color," disco "tawny." Caro flavido-alba; odore et gustu mitis vel
tenuis. Lamellae adnatae demum adnexae, pallido-flavae, subdistantes,
medio-latae. Stipes 4-9 cm longus, 4-9 mm crassus, supra albus, infra
brunnaceus, fibrillosus. Velum arachnoideum, album. Sporae 5.5-7 x
3-3.7 pt, ellipsoideae demum ovoideae, leves. Pleurocystidia 49-68 X 9 -15 A, ventricosa; cheilocystidia 28-47 x 9-4 IA, ventricosa, subellipsoides,
obclavata. Cuticula gelatinosa. Caulocystidia fasciculata, clavata, fusoidea,
ventricosa. Specimen typicum in Herb. Univ. Mich. conservatum est;
lectum prope Pellston, Michigan, 30 Sept. 1962. Smith 66386.
Pileus 3-7 cm broad, convex with an incurved margin, expanding
to broadly convex or nearly plane, "cartridge-buff" to "cream-color" on
margin, more or less ochraceous tawny on disc, marginal area streaked
with agglutinated fibrils or nearly glabrous, margin for a time decorated
with a fringe of pallid veil fibrils. Context yellowish white; odor none,
taste slight; in FeSO4 instantly olive, flesh and cutis with KOH instantly
yellow to finally tawny brown.
Lamellae adnate to adnexed, yellowish pallid, nearly subdistant,
moderately broad, edges becoming uneven.
Stipe 4-9 cm long, 4-9 mm thick, whitish above, soon dull rusty
below from handling, equal, to slightly enlarged downward, cartilaginous,
hollow, lower half fibrillose from veil, but not leaving a distinct annulus,
scurfy above. Veil arachnoid, whitish.
Spores 5.5-7 x 3-3.7 I,, smooth, apical pore very minute (under 1.4
N.A.) to absent, shape in face view suboblong to ovate, in profile obscurely inequilateral; color pale tawny in KOH, nearly hyaline in Melzer's
reagent; wall less than 0.25,i thick (estimated).
Basidia 4-spored, 18-25 x 4.5-6 uL, clavate, hyaline in KOH. Pleurocystidia 42-58 (68) X 9-15 i,, fusoid-ventricose with obtuse apex to utriform, thin-walled, content ochraceous to rusty brown but slowly hyaline
in KOH (or hyaline from the beginning), wall thin and smooth. Cheilo