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

282

The North American Species of Pholiota

in KOH cinnamon brown, paler and brighter rusty brown in Melzer's
reagent, wall about 0.25,/ thick.
Basidia 4-spored, 18-24 x 5-7,u, clavate, hyaline to pale yellow in
KOH. Pleurocystidia abundant, 33-46 x 9-16 /A, fusoid-ventricose to
utriform (apex rounded in some), thin-walled, yellowish in KOH, content "colloidal" but merely yellowish in Melzer's reagent, hyaline when
fresh, smooth. Cheilocystidia similar to pleurocystidia. Caulocystidia
scattered near stipe apex, similar to pleurocystidia or larger.
Gill trama of a central area of parallel hyaline hyphae (in KOH)
with elongated cells, walls of hyphae smooth and thin; subhymenium of
gelatinous hyphae 2-3 /,. diam. in a rather interwoven arrangement.
Pileus cutis a tangled mass of loosely arranged narrow (2-3 p.) hyaline to
yellowish hyphae imbedded in slime, at the surface the hyphae more
appressed, more highly oclraceous and somewhat incrusted; hypodermium of bright orange-brown (in KOH) interwoven hyphae, walls rough
or smooth, conspicuously ornamented where intergrading with the cutis.
Context hyphae yellow to hyaline in KOH, closely interwoven. Veil
hyphae with brown to ochraceous walls in KOH, often encrusted, many
hyphae consisting of chains of short to subglobose cells-but not sphaerocyst-like. Clamp connections present.
HABIT, HABITAT, AND DISTRIBUTION: Gregarious on burned (partially)
chip dirt. Upper Priest Lake, Boundary County, Idaho. Oct. 3, 1966.
Smith 73887, type.
OBSERVATIONS: This species is closely related to P. carbonaria Smith
but differs in the veil being russet instead of red, and the pileus darker
in color.
One collection by Kauffman, Lake Quinault, Washington, Nov. 4,
1925, probably belongs here. He identified it as P. terrestris. As dried
the fruit bodies have the stature of P. carbonaria Smith i.e., stipe 2-5 cm
long and 2-2.5 mm thick. The pilei are pale tan on the disc and pale
yellow on the margin, and a few show minute patches of fulvous veil
material. The gills are broad, close, adnate and yellowish as dried. The
stipe is yellowish above and dingy pale tan below but clearly shows the
fulvous particles or patches that are the remnants of the veil. The spores
are cinnamon in KOH, 6-7.5 x 4-4.5,i and oval in face view, with a
very minute pore. The pleurocystidia are 55-75 x 9-15 /u, and vary from
utriform (witl rounded, broad apex), to merely obtuse or subcapitate,
tapered to a blunt point at the tip of the swollen portion. The pellicle
is of the slimy type, thick and with hyphae widely dispersed in a gelatinous matrix. It was found on soil at the base of a stump.
In the type, the specimens were from chip dirt partly burned. On
Kauffman's collection there is no charred material. Hence the species is
keyed both ways in this work.
150. Pholiota subsaponacea sp. nov.
Illustrations: Text figs. 336-338; pl. 69b.