family Dematiaceae fa·mi·ly·dematiaceae uncommon noun 1. family of imperfect mushrooms having dark-colored hyphae or conidia SynonymsDematiaceaefamily Dematiaceae Related words Broader terms fungus family Parts Moniliales Part of CercosporaUstilaginoidea WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.