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

Smith ~ Hesler

199

spicuous lacterate often recurved scales from base to annulus; annulus
ragged, underside separating into two layers and dingy cinnamon, upper
layer cinnamon; apex of stipe dingy, ground color below ring pale dull
cinnamon, becoming russet from base up where bruised.
Spore deposit "russet" moist, "Verona brown" when moisture has
escaped. Spores 5-6 X 3.5-4,/, wall smooth, scarcely thickened, ~0.25 /A,
dull brown in KOH and Melzer's; elliptic in face view, nearly so in
profile, no apical pore evident. Pleurocystidia as large chrysocystidia
36-47 X 9-15 /,, subclavate-mucronate, hyaline-refractive with even
content (in KOH) or with a dark brown content more or less reticulate
in some, scarcely projecting. Cheilocystidia 26-42 x 8-13 p/, obtusely
fusoid ventricose to narrowly clavate but tapered slightly near apex in
some, thin walled, lacking any distinctive content, walls faintly yellowish
as first when revived in KOH but fading. Subhymenium gelatinous Pileus
cutis a thick gelatinous layer, the hyphae narrow (2-4 u) and with distinctly outlined walls as revived in KOH, hyaline to yellowish. Hypoderm orange-brown in KOH, of compactly arranged hyphae. Clamp
connections present.
HABIT, HABITAT, AND DISTRIBUTION: Caespitose on a log of butternut
(Jiuglans cinerca), Sharon Hollow, Mich. Sept. 2, 1967. Smith 75074.
This species is most similar to P. terrestris but is readily distinct by
the colors, color changes and habitat. It is an intermediate between stirps
Adiposa and stirps Squarrosoides.
101. Pholiota barrowsii sp. nov.
Illustrations: Text figs. 202-203.
Pileus — 8 cm latus, late convexus, viscidus, squamosus, luteus;
squamae subbfulvac. Contextus pallidus demum pallide luteus. Lamellae
latae, adnatae, confertae, pallide ochracea demum luteo brunneae. Stipes
4-9 cm longus, 5-12 mm crassus, solidus, deorsum fulvus et fibrillose
sqluamosus vel flocculosius, sursum sericeus. Sporae 5-6.5 x 3-3.5 /f.
Pleurocystidia 30-56(60) X 7-14 i,, clavata vel clavato-mucronata. Cheilocystidia 20-28 x 5-9 ix. Specimen typicum in Herb. Univ. of Mich. conservatum est; legit prope Santa Fe, New Mexico, Aug. 1957. Chas. Barrows 504.
Pileus 4-8 cm broad, convex becoming nearly plane, surface covered
with coarse dry scales as in P. squarrosa, the scales dingy tawny brownish
as dried, yellow ground color reminding one of P. squarroso-adiposa and
near ochre yellow as dried, viscid in age as scales wear away from the
thick gelatinous pellicle. Context pallid becoming yellowish and as dried
pale buff, odor and taste mild.
Lamellae broad, bluntly adnate, in age adnexed, close, pallid ochraceous becoming near "buckthorn brown" (fairly dark clay-color), edges
even.
Stipe 4-9 cm long, 5-12 mm thick, equal or nearly so, solid, becom