The North American Species of Pholiota

67. Pholiota aberrans nom. nov.

Pholiota anomala (Smith) Singer, Sydowia 15: 70. 1961. (not P. anomala Peck 1895)
Naematoloma anomalum (Smith) Smith, Mycologia 43: 477. 1951.

Illustrations: Text figs. 168-171.

Pileus 2 cm broad, plane with an abrupt conic umbo and slightly decurved margin, surface glutinous, subrimose along margin beneath the gluten, appearing finely appressed-fibrillose under a lens, disc "raw-sienna" the remainder "ochre-yellow" (bright brownish yellow to ochre-yellow), when dried tawny on disc and margin "amber brown." Context pale yellow, firm, odor and taste not distinctive.

Lamellae narrow, depressed-adnate, subdistant, equal, olivaceous yellow ("Isabella color"), edges even.

Stipe 4.5 cm long, 2.5 mm thick, equal, glutinous over lower two-thirds and orange-yellow, pale yellow and fibrillose scurfy above, soon dry and appearing agglutinated-fibrillose under a lens.

Spores 11-14 x 5.5-7 µ, rusty brown in deposit and pale cinnamon brown under microscope in KOH, with a distinct discontinuity and apex somewhat truncate or with a lens-shaped bulge, smooth as revived in KOH, in profile obscurely inequilateral, in face view ovate to nearly elliptic, in Melzer's reagent the wall pale to medium tawny.

Basidia 4-spored. Pleurocystidia 35-50 x 6-12 µ, imbedded or projecting, yellow in H2O mounts of fresh material, rusty brown in KOH, usually with an amorphous highly refractive content revived in KOH. Cheilocystidia similar to pleurocystidia or mixed with these are saccate to fusoid-ventricose leptocystidia.

Gill trama with numerous refractive oleiferous hyphae. Pileus with a cutis of hyphae 4-5 µ diam. with the free portions gelatinous (a collapsed trichodermium); hypodermium a layer differentiated by highly pigmented hyphal cells with pigment encrusted on the walls. Context hyphae yellowish in KOH. Clamp connections present.

Habit, Habitat, and Distribution: Solitary under rhododendrons, Great Smoky Mountains National Park, September, known only from the type (Smith 10782).

Observations: The fungus when fresh reminds one of an Inocybe but the apical pore and viscid stipe are not features of that genus.