Summary:
Features include 1) resupinate growth on decayed conifer wood, 2) soft fruitbodies that are whitish when fresh, the margin finely fibrillose under a hand lens, 3) spores that are suballantoid, smooth, amyloid, and colorless, 4) the absence of differentiated sterile hymenial elements, and 5) a monomitic hyphal system, the hyphae with clamp connections.

Microscopic:
SPORES 6-7.5 x 2-2.5 microns, cylindric to suballantoid, smooth, amyloid, colorless, thin-walled, collapsed in dried specimens; BASIDIA 4-spored, 20-30 x 4.5-5.5 microns, narrowly clavate, with basal clamp connection; CYSTIDIA and other sterile elements absent; HYPHAE monomitic; SUBICULAR HYPHAE 3-5 microns wide, colorless, thin-walled to firm-walled, "with conspicuous clamps at all septa, with frequent branching, typically branching from clamps", (Gilbertson), SPORES 6-7.5 x 2-2.5 microns, allantoid, smooth, amyloid, with one or two droplets; BASIDIA 4-spored, 25-30 x 4-6 microns, narrowly clavate, with a basal clamp connection; subhymenium distinct as fruitbody thickens; HYPHAE monomitic, with hyphae 3-4 microns wide, loosely interwoven, rather straight, with clamp connections at all septa, the branches occurring almost exclusively from the clamp connections, (Eriksson)

Notes:
Amylocorticium cebennense has been found in BC, ID, NS, ON, AR, CA, and MA, (Ginns), and Europe (Eriksson). Collections were examined from BC, ID, AZ, CA, and MA, (Gilbertson).

Synonyms and Alternate Names:
Thelebolus zukalii Heimerl