Summary:
Features include 1) resupinate growth on dead branches of trees and bushes and on dead herbaceous substrates, 2) thin, white fruitbodies that are smooth without an especially differentiated margin, 3) smooth, elliptic to bean-shaped, amyloid spores often somewhat constricted in the middle, 4) terminal or lateral basidia that are 4-spored, and 5) a monomitic hyphal system, the hyphae narrow and richly branched, with clamp connections, and in the subhymenium ampullately widened,

Microscopic:
SPORES 6-10(12) x 3-4.5 microns, elliptic, bean-shaped or kidney-shaped, "often somewhat constricted in the middle", smooth, amyloid, colorless, thin-walled; BASIDIA 4-spored, 16-22 x 5-7 microns, "varying in shape, generally terminal but some pleurobasidia observed, broadly clavate when terminal, sometimes slightly constricted, when pleurobasidial subcylindrical"; with basal clamp connection; CYSTIDIA none; HYPHAE monomitic, 1-3 microns wide, thin-walled, with clamp connections, richly branched, especially in the subhymenial layer, "where they are also more or less ampullately widened; subicular hyphae straighter, more distinct, and more sparsely branched", (Eriksson)

Notes:
Melzericium udicola has been found in BC, WA, ID, ON, (Ginns). It also occurs in Norway, Sweden, and the Canary Islands, (Eriksson), and France (Bourdot).

Synonyms and Alternate Names:
Hypoxylon cinereo-lilacinum J.H. Mill.