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

Smith ~ Hesler

73

OBSERVATIONS: The arcuate distant yellow-margined gills appear to
distinguish this species from P. curvipes but the relationship is close.
P. curvipes as a rule is not densely imbricate-squamulose on the pileus.
See P. tuberculosa sensu Orton (1960) also.
Stirps Corticola
This group is featured by species having pleurocystidia. P. erinacea
of the next stirps shows these in some collections but not in others.
Key
1. Spores 6-7 x 3.5-4............................................................ P. cyath icola
1. Spores larger................................................................................................ 2
2. Pleurocystidia 26-30 x 5-8 u/, clavate-rostrate.......................................................................... P. pse tdolim u tlat
2. Pleurocystidia 40-60 x 10-16.......... P. corticola
23. Pholiota pseudolimulata sp. nov.
Pileus 10-20 mm latus, subumbilicatus, siccus, squamulosus, fulvous.
Lamellae latac, distantes, adnatae. Stipes 1-2 cm longus, 1-1.5 mm crassus,
sursutm luteus, deorsum fibrillosus. Sporae 7-9 x 4-5 pc. Pleurocystidia
26-30 x 5-8 tx, clavatorostrata. Cheilocystidia 26-35 x 9-18 tL, clavata.
Specimen typicuim in Herb. Univ. Mich. conservatum est; legit prope
Emerson, Mich., 9 Aug. 1963, Smith 67107.
Pileus 10-20 mm broad, convex-depressed, the margin long remaining
incurved, surface dry, covered over all except marginal area by very fine
erect dull tawny brown fibrillose squamules, fibrils toward margin more
appressed and not as well organized into squamules, ground color pale
dingy ochraceous. Context thin, but not fragile, yellowish.
Lamellae broad, distant to subdistant, yellowish, when dried more
rusty brown than pileus, adnexed, edges minutely floccose.
Stipe 1-2 cm long, 1-1.5 mm thick, equal fistulose, concolor with
pileus below veil-line from fibrils and patches similar to scales on pileus,
yellowish and faintly pruinose above, with a mycelial pad at base.
Spores 7-9 x 4-5,u, elliptic in face view, slightly bean-shaped in
profile, smooth, tawny in KOH and Melzer's reagent, with a minute
apical pore.
Basidia 4-spored, 18-23 x 4-6 /, narrowly clavate, hymenium yellow
in KOH. Pleurocystidia clavate-rostrate, 26-30 x 5-8 up, neck narrowed
to a needle-like apex, content homogeneous. Cheilocystidia clavate, 26-35
x 9-18 /u, wall thickened slightly and surface mottled from slight unevenness (or irregular wall thickenings?), walls bright ochraceous in
KOH.