Polyporus dictyopus Mont. 1835

Polyporus diabolicus Berk. Jour. Bot. & Kew Misc. 8 : 174. 1856
Polyporus rufo-atratus Berk. Jour. Bot. & Kew Misc. 8 : 174. 1856. (Type from Panur6, Brazil.) Polyporus vemicosus Berk. Jour. Bot. & Kew Misc. 8 : 175. 1856. (Typ^ from Panur6, Brazil.)
Pileus circular, umbilicate, convex, 3-10X0.2-0.4 cm. ; surface bright-bay to almost black, usually radiate-striate, pruinose to glabrous, sometimes proliferous ; margin rather thin, entire, concolorous to crenate or lobed, at first straight, becoming slightly deflexed : context white or pallid, corky, 1-3 mm. thick ; tubes white to umbrinous, 1-2 mm. long, mouths minute, circular, 4-6 to a mm., edges thick, entire: spores smooth, hyaline: stipe central, solid, woody, equal or slightly tapering upward, concolorous, glabrous, 3-8 cm. long, 3-10 mm. thick.
Type locality : Panur6, Brazil.
Habitat : Dead trunks.
Distribution : Central America and South America.

Polyporus scabellus (Pat.) Murrill
Melanopus scabellus Pat. Bull. Soc. MyC. Fr. 16 : 178. 1900.
I
Pileus semicircular or nearly reniform, plane, slightly elevated behind, 3-8 X 4-10 X 0.1-0.5 cm.; surface bright chestnut-colored, finely radiate-striate or marked with rows of serrated black squamules ; margin straight, acute, entire : context white, becoming brownish on drying, coriaceous, membranous ; tubes very short, not decUrrent, mouths lightbrown, more or less tinged with fuliginous near the stipe, round, very small, the dissepiments thick: spores not examined: stipe excentric, horizontal, cylindrical, very short, black, minutely velvety, marked with punctate depressions, 3^ mm. long, 3-6 mm. thick, inserted upon a black orbicular disc.
Type locality : Guadeloupe.
Habitat : Trunks of Myrsine, Cedrela^ etc.
Distribution : Guadeloupe.

Polyporus hydniceps Berk. & Curt. Jour. Linn. Soc. 10 : 305. 1868
Pileus cup-shaped or irregularly broken up into flabelliform lobes, 3-4X0.1-0.2 cm. ; surface light-brown to bay, adorned with very prominent cylindrical or subpyramidal processes ; margin thin, irregular, undulate or lobed, inflexed : context pallid, fleshy, rigid and fragile when dry, about 1 mm. thick ; tubes decurrent, pallid to ochraceous, short, mouths subelliptical or circular, becoming angular, 4-6 to a mm., edges, entire to dentate : spores smooth, hyaline : stipe central or excentric, short, thick, usually reticulate, brown to blackish, fleshy, 2 cm. long, 5-15 mm. thick.
Type locality : Cuba. Habitat: Dead wood. Distribution: Cuba.

Polyporus columbiensis Berk. I^ond. Jour. Bot. 1 : 454. 1842
Pileus circular, very thin, subinfundibuliform 2.5X0.05 cm.; surface brown, very smooth and glabrous, resembling parchment or the skin of an apple ; margin thin, acute, straight, undulate : context pallid, membranous ; tubes decurrent, very short, dark-brown in the type specimens, mouths minute, angular, 5 to a mm., edges thin, acute : spores not examined : stipe central, slender, concolorous, finely velvety, tough and fibrous, 1-5 cm. long, 3 mm. thick.
Type locality ; Columbia river, South Carolina. Habitat : On dead wood. Distribution : South Carolina.