The North American Species of Pholiota

22. Pholiota fagicola (Murr.) Kauffman, Amer. Journ. Bot. 13: 28. 1926.

Gymnopilus fagicola Murrill, North Amer. Fl. 10: 201. 1917.

Pileus 2 cm broad, hemispheric, not fully expanding, slightly umbonate, uniformly fulvous, caespitose, surface dry, densely imbricate-squamulose.

Lamellae adnate, melleous to ferruginous, distant, arcuate, broad, edges beautifully crenulate and yellow.

Stipe 3 cm long, 2 mm thick, ochraceous, becoming darker at the base, rough with rather coarse fibrils, equal, slender, rather tough, solid, dry.

Spores (5.5) 6-8.5 (9) x (3.5) 4-5 µ, elliptic in face view inequilateral to bean-shaped in profile, smooth, no germ pore visible. Basidia 24-28 x 5-6 µ, 4-spored. Pleurocystidia present as brown basidioles 24-30 x 4-6 µ, Cheilocystidia 25-66 x 5-9 µ, in tufts, cylindric-capitate, colorless or brown. Caulocystidia scattered, few, cylindric-capitate, similar to the cheilocystidia.

Gill trama subparallel, hyphae 6-9 µ, wide, yellow to brownish in KOH, subhymenium not gelatinous. Pileus trama radially interwoven. Pileus cutis a well-defined zone of yellowish brown hyphae to dark rusty brown, bearing mounds of more or less erect columns of hyphae and some clavate pileocystidia 34-52 x 6-10 µ. Clamp connections present.

Habit, Habitat, and Distribution: On a beech log, July, New York. Type studied.

Observations: The arcuate distant yellow-margined gills appear to distinguish this species from P. curvipes but the relationship is close. P. curvipes as a rule is not densely imbricate-squamulose on the pileus. See P. tuberculosa sensu Orton (1960) also.