Summary:
Features include a disc-like fruitbody that is brown to brownish black, sometimes with an olive tinge, thin brittle brownish flesh, absent or almost absent stem, growth on damp soil, and microscopic characters.

Microscopic:
spores 16-22 x 8-12 microns, elliptic, smooth becoming roughened (warty) or partially reticulate when mature, with 1 or 2 oil droplets, (Arora), spores 20-22 x 10-11 microns, at first smooth, developing rather conspicuous warts about 2 microns in diameter, very faintly yellowish or olive, with 2 conspicuous oil droplets or more rarely 1, uniseriate or occasionally crowded, parallel with ascus or oblique; asci 8-spored, reaching a length of 300-350 microns and a width of 15-17 microns, cylindric in upper part, tapering rather abruptly in lower part into stem-like base; paraphyses rather strongly widened in upper part, reaching width of 7-8 microns at tip, yellowish brown, (Seaver), spores 14-18 x 9-11 microns, elliptic, finely warted, packed with numerous small oil droplets; asci up to 300 x 17 microns; paraphyses slender, slightly widened in upper part, with oily contents, (Dennis)

Notes:
Peziza brunneoatra is found at least in WA, OR, ID, CA, and CO, (Larsen), and NY, IA, and Europe, (Seaver), including France (Dennis). Collections from BC were deposited at the University of British Columbia determined by B.J. Macdonald and by V.J. Krajina.

Synonyms and Alternate Names:
Corticium albo-ochraceum Bres.
Trechispora albo-ochracea (Bres.) Liberta