genus Gymnopilus ge·nus·gym·nopilus uncommon noun 1. a genus of fungus characterized by the orange color of the spore deposit SynonymsGymnopilusgenus Gymnopilus Related words Broader terms fungus genus Parts Cortinariaceae Part of Gymnopilus spectabilisGymnopilus validipesGymnopilus ventricosus WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.