Collybia atramentosa Kalchbr. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Mycenaceae genus Hydropus species Hydropus atramentosus Name Homonyms Collybia atramentosa (Kalchbr.) Sacc. Collybia atramentosa Kalchbr.