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

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The North American Species of Pholiota

and in Melzer's reagent. Pleurocystidia 50-70 x 10-15 p1, fusoid-ventricose, apex obtuse, wall thin, smooth; content homogeneous or with refractive rods and particles near apex, yellow to hyaline, often yellow
only in the neck. Cheilocystidia 30-54 x 8-12 / obtusely fusoid to fusoidventricose, obclavate to nearly ellipsoid, smooth, often with refractive
particles near or at apex. Caulocystidia 45-70 x 5-14 p/, clavate, subcylindric, fusoid-ventricose or irregular, walls thin but yellow in KOH,
content homogeneous.
Gill trama of subparallel floccose hyphae with enlarged cells, the
walls thin, smooth, yellowish to hyaline in KOH; subhymenium
a narrow gelatinous layer, structure very soon indistinct. Pileus cutis a
thick layer of narrow mostly hyaline hyphae collapsing and becoming
reticulate, incrusted near hypodermium, 2-3.5 /u diam.; hypodermium of
floccose heavily incrusted rusty-brown hyphae in KOH. Context hyphae
inflated, smooth thin-walled and yellowish in KOH. Clamp connections
present. All hyphae inamyloid.
HABIT, HABITAT, AND DISTRIBUTION: On soil, Idaho, July, type. Miller
2382.
OBSERVATIONS: The distinctive characters of this species include its
narrow gills which are dull brown at first, and its brown, umbonate
pileus. It has some relationship to P. subtestacea, which has a brick-red
to pinkish pileus as dried, broad gills which are at first white, and a
testaceous veil. The non-darkening stipe base and consistently thin-walled
pleurocystidia distinguish it from P. decorata.
Stirps Polychroa
192. Pholiota polychroa (Berk.) Smith & Brodie Bot. Gaz. 96: 533 -546. 1935.
Agaricus polychrous Berkeley, Lond. Journ. Bot. 6: 313. 1847.
Agaricus ornellus Peck, N.Y. State Mus. Ann. Rept. 34: 42. 1883.
Flammula polychroa (Berk.) Saccardo, Syll. Fung. 5: 824. 1887.
Pholiota appendiculata Peck, N.Y. State Mus. Bull. 94: 33. 1905.
Pholiota o-rnlla (Pk.) Peck, N.Y. State Mus. Bull. 122: 151. 1908.
Gymnopilus polychrous (Berk.) Murrill, North Amer. Fl. 10: 204. 1917.
Illustrations: Text figs. 431-433; pls. 86a, 87.
Pileus 1.5-10 cm broad, obtuse to convex when young, with the
margin incurved, expanding to broadly convex or obtusely umbonate,
surface glutinous to viscid, cuticle separable, glabrous, but at first decorated witlh the remnants of the veil as creamy to avellaneous superficial
squamules, margin often appendiculate with veil remnants, of many
colors: pale grass-green, blue-green ("turquoise green"), dark olive, or
dark purplish-drab to purple-gray, gradually developing yellow hues,
often mottled, often becoming dull orange to yellow on the disc, the
margin olivaceous (color extremely variable). Context soft, moist, thick