Perenniporia inflexibilis (Berk.) Ryvarden 1972

Pyropolyporus inflexibilis (Berk.) Murrill
Polyporus inflexibilis Berk. Jour. Bot. & Kew Misc. 8 : 199. 1856.
Pyropolyporus crustosus Murrill, Bull. Torrey Club 30 : 113. 1903. (Type from Jamaica.)
An ungulate plant of medium size with brown tubes, ferruginous substance and smooth encrusted dark-brown surface. Pileus woody, convex above, plane below, somewhat compressed-ungulate, 7X12X5 cm.; surface glabrous, horny-encrusted, dark-brown, concentrically sulcate, marked with narrow black concentric lines; margin rounded, yellowishbrown, sterile: context hard, concentrically banded, ferruginous, 2 cm. thick behind' tubes indistinctly stratified, 0.5-1 cm. long each season, 5-6 to a mm., drab-colored within,' mouths polygonal, concolorous, edges thin, acute, entire : spores globose to ovoid, smooth^ thin-walled, hyaline, 3.5-4X4//; hyphae darker ; cystidia none. Type locality : Panur^, Brazil. Habitat : Dead trunks of trees. Distribution: Jamaica; also in Brazil.