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

Smith ~ Hesler

233

7-15 pF, elongate-ellipsoid to subfusoid, thin-walled, smooth, content
homogeneous.
Gill trama a central area of floccose hyphae more or less parallel in
arrangement becoming more interwoven finally and cells often greatly
inflated (+ 15,), walls thin, smooth, ochraceous to nearly hyaline in
KOH; subhymenium a gelatinous layer of hyaline, narrow hyphae (2-3
/x diam.), subparallel or diverging to basidia. Pileus cutis a gelatinous
pellicle of narrow pale ochraceous smooth to asperulate hyphae interwoven loosely in the gelatinous matrix; hypodermial zone of amber-brown
(in KOH) floccose smooth to incrusted hyphae of various diameters
(cells inflated in many). Context hyphae with smooth thin ochraceous
to hyaline walls, cells inflated. Clamp connections present. All hyphae
not amyloid.
HABIT, HABITAT, AND DISTRIBUTION: On soil or rotten logs, New
Mexico, August, Barrows 763.
OBSERVATIONS: This species is related to P. lubrica, in which the
cystidia have thin walls. It dries to a tawny-olive tint, and is very dingy
in appearance.
120. Pholiota pseudograveolens sp. nov.
Illustrations: Text figs. 508-510; pl. 58.
Pileus 6-7.5 cm crassus, late convexits demum planus, subviscid.s,
ad centrum sordide luteo-brunneus, ad marginem laete citrinus, glaber.
Contextus crassus, firm us, laete citrinus demurm olivaceo-brun neus; sapor
mitis; odor fragrans. Caum "FeSO," olivaceus, "Guaiac" deinde caeruleus.
Larnmellae laete luteae demum subfulvae, adnatae, late, confertae. Stipes
4-6 cm longuts, 9-12 mm crassus, deorsum sordide luteo-brunneus, sursum
citrinlus. Sporae 6-8 x 3.5-4 /L. Pleurocystidia crassotunicata. Specimen
typicum in Herb. Univ. of Mich. conservatum est; legit prope Proud Lake
Recreation Area, Oakland Co., Michigan. Sept. 3, 1966, Smith 73302.
Pileus 6-7.5 cm broad, expanded plane at maturity, broadly convex
when young, glabrous, subviscid when fresh but soon dry, color near
"bister" on disc or dull "tawny," (dull to brighter yellow brown), near
the margin lemon yellow, opaque when moist or faded. Context thick
and firm, lemon chrome near margin, near olive to olive-brownish in disc,
odor strongly fragrant as in Cortinarius percomis, taste mild, with FeSO4
olive, with Guaiac quickly blue.
Lamellae bright yellow, slowly becoming buckthorn brown from
spores, broadly adnate, tapered to margin of pileus, broad, close, edges
crenulate.
Stipe 4-6 cm long, 9-12 mm thick, equal, chrome yellow within
above, becoming bister in cortex over the base and finally over all; surface thinly fibrillose, upper part lemon yellow, basal mycelium orange in
age.
Spores 6-8 x 3.2-3.8 (4) F, smooth, with a minute but distinct apical