Summary:
Features include 1) resupinate growth on conifer wood and less often hardwood, 2) a fruitbody that is pale ochraceous to cinnamon-buff, and smooth, 3) spores that are broadly cylindric, smooth, and inamyloid, 4) sulfo-positive gloeocystidia that may show 1 or more lateral papillae, 5) a basal layer of dextrinoid, dichotomously branching skeletal hyphae, and a more superficial layer containing generative hyphae that are thin-walled and simple-septate. ''Rogers and Jackson ... hesitated in placing C. abeuns in synonymy because then had not seen the type of S. ochroleucum. They, having examined all the other collections cited by Burt, found only one New York and one British Columbia collection to "resemble the type". Julich and Stalpers ... and Boidin and Lanquetin ... accept C. abeuns as a synonym but do not give supporting evidence.'' (Ginns). The online Species Fungorum, accessed Oct 30, 2020 listed the current name as Scytinostroma lusitanicum but MycoBank, accessed the same day, gave the latter as an obligate synonym.

Microscopic:
SPORES 8-11(13) x 5-6.5(7) microns, broadly cylindric, smooth, inamyloid; BASIDIA (2)-4-spored, 40-60-80 x 6.5-8 microns, narrowly clavate; hymenium continuous, composed of basidia and gloeocystidia; narrow non-dextrinoid hyphae sometimes project above the basidia; GLOEOCYSTIDIA 80-130-250 x (3)4.5-9(12) microns, sulfo-positive, walls somewhat thickened in the basal part (they may have septa, and some show 1-(2-3) lateral papillae); IN SECTION 130-800 microns thick, formed of two distinct layers, a basal layer of 100-600 microns, composed of dextrinoid skeletal hyphae 1.5-2 microns wide, and the hymenium at first thin but thickening, 50-220 microns thick, without skeletal hyphae or showing only rare scattered skeletal hyphae; generative hyphae are 1.5-3.5(5) microns wide, thin-walled and simple-septate; the skeletal hyphae have a short stem, bifurcating the first time to give to long, spreading arms that may in their turn branch 1-2(3) times, (Boidin), SPORES (8)10-13(15) x 4.5-6.5(8), elliptic; BASIDIA 30-70 x 6-11 microns; GLOEOCYSTIDIA 50-110(130) x (4)5-11(13) microns, clavate to fusoid; SKELETAL HYPHAE 2-3 microns wide, (Julich)

Notes:
Collections were examined from BC, AL, AZ, CA, NH, and NY, (Ginns). Collections were examined from Guadeloupe, France, Canary Islands, Gabon, Morocco, and India, and it has been reported also from Scandinavia, Transcaucasus, Azores, Himalayas, and Japan, (Boidin).