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

Smith ~ Hesler

241

tinous layer of hyphae 2-4.5 (5.5) IL diam. with hyaline smooth walls
revived in KOH); hypodermium of narrow (3-6.L), smooth, interwoven,
ochraceous to orange-ochraceous hyphae nongelatinous in KOH, the walls
thickened slightly (0.5 Iu or more). Context hyphae 8-15 IX diam., cells
inflated, walls smooth to slightly thickened, hyaline to yellowish in KOH.
All hyphae inamyloid. Clamp connections present.
HABIT, HABITAT, AND DISTRIBUTION: Scattered on a mossy bank, under
spruce. Payette National Forest, Idaho, Black Lee Creek, Aug. 31, 1958.
Smith 60691 (type), 60706, 60707.
OBSERVATIONS: The narrowly ventricose, greatly elongated pleurocystidia are one of its distinctive features. The virgate pileus, whitish
gills when young, sharp FeSO4 reaction of the context, white veil and
whitish stipe apex are distinctive field characters along with the terrestrial
habitat.
125. Pholiota flavopallida sp. nov.
Pileus 2-5.5 cm latus, plano-umbonatus, glutinosus, glaber, pallide
flavus vel luteolus ad centrum subfulvus. Contextus luteolus. Lamellae
angustae, confertae adnatae demum decurrentes, pallidae demum luteae
demum brunneae. Stipes 3-4 cm longus, 3-5 mm crassus, aequalis, fibrillosus, deorsum subfulvus, sur-sum pallidus; velum album, fibrillosum.
Sporae 5-6(7) x 3-3.5 t. Pleurocystidia 40-56 x 12-17 A, fusoide ventricosa vel subfusoidea, tenuitunicata vel rare subcrassotunicata (+ 0.5 I).
Specimen typicum in Herb. Univ. Mich. conservatum est; legit prope
Nordman, Idaho. 11 Nov. 1956. Smith 54485.
Pileus 2-5.5 cm broad, convex to plano-umbonate, glutinous, glabrous, marginal area pale yellow ("pale pinkish-buff" to "ivory-yellow"),
disc clay-color to dingy pale tawny, margin lacerate at times. Context
pallid becoming yellowish, green in FeSO4, odor not distinctive, taste
mild.
Lamellae narrow, close, adnate to short decurrent, whitish becoming
yellowish and finally dingy cinnamon to brown ("Verona-brown").
Stipe 3-4 cm long, 3-5 mm thick, white above, clay-color to rusty
brown below, equal or base enlarged somewhat, thinly fibrillose from
the poorly developed veil. Apex silky to silky-pruinose.
Spores 5-6 (7) x 3-3.5 Iu, ochraceous to pale tan in KOH and merely
tinged cinnamon in Melzer's reagent, smooth, apical pore exceedingly
minute, wall thin (scarcely visible as a double line), in face view oblong
to narrowly elliptic, in profile slightly bean-shaped to oblong.
Basidia 16-20 x 4-5,X, mostly 4-spored, narrowly clavate, yellowish
in KOH and in Melzer's sol. Pleurocystidia 40-56 x 12-17 pI fusoidventricose to subfusoid, obese, thin-walled or with wall up to 0.5 I, thick,
smooth, apex rounded to obtuse, content often yellow in KOH when first
revived. Cheilocystidia 27-45 x 7-12 AI, fusoid-ventricose to subfusoid,
often with yellow homogeneous content in KOH, walls thin and smooth.