Summary:
Features include 1) small, very dark brown to black fruitbodies with a narrow point of attachment, opening at maturity by tearing of the tissue overlying the concave, light yellow to brown spore-bearing surface, 2) consistency that is cartilaginous to leathery when moist, 3) erumpent, scattered or clustered growth on hemlock and spruce, and 4) microscopic characters including filiform-clavate spores. The family position is uncertain, and some authors consider this taxon to be in the family Helotiaceae.

Microscopic:
spores 35-56(60) x 1.5-2.5 microns, filiform-clavate, broadest near upper end, tapering gradually in lower part to a point, nearly straight to slightly curved, 1-celled, "lying parallel or occasionally spirally coiled along the long axis of the ascus"; asci 8-spored, 100-142 x 5.5-10 microns, "clavate, broadest near apex", conspicuously narrowed in upper part, "then acutely rounded at the apex", pore not turning blue in iodine; paraphyses 1.5-2.5 microns wide, "filamentous, curled, coiled, or recurved", colorless, simple or branched at tips, projecting beyond the asci to form an epithecium

Notes:
Collections were examined from BC, WA, and AK, (Reid, J.).

Synonyms and Alternate Names:
Atropellis treleasei (Sacc.) Zeller & Goodd.
Godronia treleasei (Sacc.) Seaver
Scleroderris treleasei Sacc.