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Species Information
Summary: Features include 1) resupinate growth on wood, 2) a fruitbody that is thin, white to yellowish, becoming thicker and waxy, with conspicuous rhizomorphs, 3) on drying a tendency to for the fruitbody to separate off in small rectangular blocks, 4) spores that are obliquely elliptic to pip-shaped, smooth, and colorless, and 5) a monomitic hyphal system, the subicular hyphae wide with large clamp connections.
Ceraceomyces tessulatus has been found in BC, WA, OR, ID, AB, NS, ON, PQ, AL, AZ, LA, MD, ME, MO, NH, NM, NY, RI, SC, and VT, (Ginns), and Austria, Czechoslovakia, Estonia, Finland, France, Germany, Norway, Spain, Sweden, United Kingdom, and the USSR, (Julich).
Fruiting body: moderate in size to rather large, detachable, thin at first and pellicular, then becoming thicker and ceraceous [waxy], brittle when dry; white to yellowish, in old parts darker; smooth; subiculum loose and white, rhizomorphs frequent at periphery, emerging from subiculum, (Eriksson), growing thin and flat on wood, 2-4cm across, in section 0.015-0.02cm thick, "adnate" but with "loose attachment" to substrate with a tendency to scale away from it in rectangular masses, somewhat membranous; "in the herbarium becoming naphthalene-yellow, with central parts light ochraceous-buff"; cracking with drying into masses 0.1-0.4cm wide and separated by fissures 0.1-0.2cm wide, "with some of the white silky subiculum clinging to the substratum"; margin fibrillose and whitish, (Burt), spore deposit white (Buczacki)
Microscopic: SPORES 6-8 x 3.5-4.5 microns, obliquely elliptic to pip-shaped, smooth, thin-walled; BASIDIA 4-spored, 25-35 x 5-6 microns, narrowly clavate; CYSTIDIA none; HYPHAE monomitic: subiculum hyphae 4-8 microns wide, loosely interwoven, somewhat thick-walled, sparsely branched and anastomosed, with clamp connections, subhymenium hyphae 3-4 microns wide, densely branched and interwoven, with clamp connections, (Eriksson), SPORES 4-4.5 x 3 microns, smooth, colorless, few found; no GLOEOCYSTIDIA, hyphae 4 microns wide, loosely interwoven, very thin-walled, abundantly nodose-septate, not encrusted, (Burt), SPORES 6-8(10) x 3-4(5) microns, (Julich)
