Phellinus robiniae (Murrill) A. Ames 1913

Pyropolyporus robiniae Murrill, Bull. Torrey
Club 30: 114. 1903.
A large fungus with dark rimose surface and tawny hymenium, very common on Rohinia Pseudacacia. Pileus hard, woody, dimidiate, ungulate to applanate, 5-25 X 5-50 X 2-12 cm.; surface velvety, smooth, soon becoming very rimose and roughened, fulvous to purplish-black, at length dull-black, deeply and broadly concentrically sulcate ; margin rounded, velvety, fulvous : context hard, woody, concentrically banded, 1-3 cm. thick, fulvous; tubes stratose, 0.15-0.5 cm. long, 5 to a mm., fulvous, mouths subcircular, edges entire, equaling the tubes in thickness : spores subglobose, smooth, thin-walled ferruginous, copious, 4-5 /x; cystidia none.
Type locality : Virginia.
Habitat : On living trunks of Robinia Pseudacacia.
Distribution : Connecticut to Florida and west to Missouri and Texas.

Pyropolyporus cedrelae Murrill, sp. nov
Pileus woody, hard, compressed-ungulate, broadly attached, plane below, 7-12X8-25 X3-7 cm.; surface tomentose, deeply sulcate, fulvous, becoming very rough, rimose and black with age ; margin obtuse, ferruginous to fulvous, tomentose, smooth : context corky to woody, 5-10 mm. thick, fulvous; tubes evenly stratified, 2-3 mm. long each season, fulvous within, mouths circular, invisible to the unaided eye, 5-6 to a mm., edges obtuse, entire, ferruginous to fulvous: spores globose, smooth, golden-brown, 5-6//, concolorous with the hyphae.
Type collected at Bluefields, Jamaica, on a living trunk of Cedrela odoraia, November 10, 1902^ F. S. Earle 450.
Distribution : Known only from the type locality.

Phellinus robiniae, commonly called the cracked cap polypore or Phellinus rimosus, is a fungus of the family of Hymenochaetaceae. The fungus primarily infests black locusts, aided by openings caused by Megacyllene robiniae infestation, but also grows on various other trees such as Carya, oak, and Acacia. Cracked cap polypore is sympatric with most of its hosts. It has a brown spore print, leaving brown streaks on the tree below the fungus.