Basidiocarps (fruit bodies) are produced on soil and litter, sometimes partly encrusting stems of living plants.

Although it was unusual at that time to separate fungal genera on purely microscopic characters, Sebacina was erected for effused, Corticium-like fungi with tremelloid basidia.

[1] Subsequent authors added many additional species of corticioid fungi with septate basidia to the genus.

The basidia are tremelloid (ellipsoid and vertically septate), giving rise to long, sinuous sterigmata or epibasidia on which the basidiospores are produced.

[6] Sebacina species were assumed to be saprotrophic until DNA analysis of mycorrhizal roots showed that they were ectomycorrhizal plant associates.