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 Add this item to the list  Phellodon alboniger (Peck) Banker
Page number:65 
Remarks (internal):Pinus strobus and Tsuga canadensis were found near all of the collection sites of P. alboniger, and six other tree species were very abundant at most of the sites.
Phellodon alboniger is very similar to Phellodon niger. Sporophore contexts of both species have a hard black inner layer diagnostic of the two. Several differences exist between the species, however. The sporophores of P. alboniger have pilei that are convex to plane, while those of P. niger are depressed to subinfundibuliform. The color of the sporophores of P. alboniger range from white at the actively growing margin to grayish brown on the disc, while the basidiocarps of P. niger are olive gray to dark gray in color. In addition, the pileus context tissue for P. alboniger may be up to 1.0 cm thick and is only half that in P. niger.
Harrison (1961) listed P. alboniger as a variety of P. niger. After observing many different specimens of both species in this study, however, enough characters were available to justify keeping them separate. Only I after obtaining cultures of these two species and subsequent mating studies would it be possible to positively determine if they are different.
Description type:Non-original description 
Description:Phellodon alboniger (Peck) Banker
Sporophore solitary to gregarious and often concrescent. Pileus up to 9.0 cm broad, convex to plane, rarely becoming subdepressed, spongy tomentose to matted, often glabrous in weathered specimens, after a heavy rainfall the pileus becomes water soaked, white (6A1), gray (6B1) to chamois (4C5), later brownish gray (6F2), often with Persian blue (23A3) margins; context up to 1.0 cm thick, duplex, azonate, subsurface layer extremely spongy, concolorous with the pileus, inner layer hard, bluish black (21H8); taste mild; odor slightly fragrant, stronger after drying. Stipe up to 5.5 x 4.0 cm, central, attenuate above with a bulbous base, subvelutinous to spongy tomentose below to matted above, smooth, concolorous with the pileus; context duplex, azonate, concolorous with the pileus flesh. Spines up to 4.0 mm long, stout, decurrent, crowded, white (6A1), gray (6B1) to reddish gray (7B2) or brownish gray (7D2). Chemical reactions: context tissue bluish green to dark brown or black in NH4OH and bluish green to olive or black in KOH. Pileus trama hyphae up to 5.0 µm diam, uninflated, interwoven in subsurface layer, parallel below, unclamped; gloeoplerous-like hyphae up to 7.0 :m diam. SPINE HYPHAE: up to 5.0 :m diam, uninflated, interwoven in subsurface layer, parallel at the center, unclamped; gloeoplerous-like hyphae up to 8.8 µm diam. SPINES TRAMA HYPHAE: up to 5.5 (6.0) :m diam, uninflated, unclamped. Basidia 20.034.0 (42.5) x 4.0-6.0 :m (X= 27.98"4.07 x 5.28"0.59 :m), clavate, unclamped; sterigmata 3.0-5.0 (5.6) µm long (X= 4.26"0.71 :m). Basidiospores 3.5-4.5 (5.0) x 3.0-4.0 (4.5) µm (X= 4.11"0.36 x 3.68"0.34 :m), subglobose to globose, hyaline; ornamentation echinulate, spinules not prominent; hilar appendage oblique, prominent.
Terphenylquinones: Thelephoric acid.
Distribution: occurs in eastern North America and in Europe (Harrison, 1968); specimens examined: Alabama, Georgia, North Carolina, South
Carolina, Tennessee, Virginia.
Taxon name: