First person to use this name on MO: Roo Vandegrift
Stromata pulvinate to effused pulvinate, discrete, densely aggregated or fused, 0.5 to more than 10 cm diam x 0.8-4 mm thick, attached to substrate with narrow connectives, usually with crenate, sloped margins; surface dull copper brown, dark brown to blackish brown, often with reticulate major cracks; carbonaceous immediately beneath surface; tissue between and beneath perithecia coriaceous to woody, white to gray, becoming dark brown and disintegrating.
Perithecia spherical to obovoid, 0.7-1.5 mm diam x 1-2 mm high.
Ostioles papillate to coarsely papillate.
Asci 410-480 mm total length x 10-14 mm broad, the spore-bearing parts 170-210 mm long, the stipes 200-260 mm long, with apical ring bluing in Melzer’s iodine reagent, urn-shaped, 4-6 mm high x 3-4 mm broad.
Ascospores dark brown to blackish brown, unicellular, fusoid to ellipsoid, inequilateral, with acute ends often pinched and blackened, smooth, 21-34 × 8.5-12 mm, with straight germ slit spore-length or nearly so.