Microscopic: spores 7-10(12) x 3-4.5 microns, cylindric to slightly curved-cylindric, thin-walled with thin septa, tinted, apiculate, becoming 1-septate at maturity, germination by colorless spherical conidia or by germ tubes; probasidia 20-35 x 3-4.5 microns, cylindric-subclavate, with basal septa, becoming bifurcate; hymenium smooth or occasionally folded or wrinkled, consisting of basidia and occasionally simple cylindric dikaryophyses; composition otherwise "homogeneous, of thin-walled, septate, roughened hyphae, showing in transverse section an organisation into three zones, clamp connections absent", (McNabb), spores 7-10 x 2.5-4(5) microns, cylindric-elliptic, slightly curved (allantoid), smooth, inamyloid, colorless, with one septum, with drops; basidia 30-40 x 2.5-4 microns, fork-shaped, without basal clamp connection; cystidia not seen; hyphae in part with thick gelatinized walls, 2-4 microns wide, clamp connections absent, (Breitenbach), spores yellow in mass, very pale yellow or colorless by transmitted light, (Martin)
Habitat and Range
SIMILAR SPECIES
Calocera viscosa is larger (up to 10cm), and more branched, (Arora).
Habitat
on barkless branches of hardwoods (Acer, Alnus, Betula, Fagus, Gleditsia (honeylocust), Liriodendron, Populus, Quercus), less frequently on conifer wood (Juniperus, Pinus, Pseudotsuga, Tsuga), causes brown pocket rot and brown basal rot, (Ginns), single, gregarious, to clustered, on dead barkless hardwood, especially Quercus (oak), less frequently Fagus (beech), occasionally on conifer wood, (Breitenbach for Europe), summer and fall (Bacon)