Fomes praerimosus (Murrill) Sacc. & D. Sacc. 1905

Pyropolyporus praerimosus Murrill, Bull. Torrey
Club 30: 115. 1903.
A large ungulate plant with plane brown hymenium and a very rimose blackish surface. Pileus woody, rounded-ungulate, 8-12 X 7-10 X 8-11 cm.; surface exceedingly rimose after the first year, broadly furrowed, the projecting ridges splitting away in age, very dark-brown to black ; margin obtuse, velvety, rusty to hoary : context corky to woody, concentrically banded, fulvous, 0.5 cm. or less thick ; tubes indistinctly stratified, 1-2 cm. long each season, 3 to a mm., concolorous within and without with the context, mouths rounded to polygonal, ochraceous at first, edges rather thick, obtuse, becoming thin and often splitting in age: spores globose, smooth, deep-ferruginous, 3^/^; spines ferruginous, 10-17 X 5-10// ; largest at the base.
Type locality : El Capitan Mountains, New Mexico, at an altitude of 2100 meters. Habitat : Trunks of Quercus unduLaia. Distribution : Known only from the type locality.