Riccardia nana Mizut. & S.Hatt. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Marchantiophyta class Jungermanniopsida order Metzgeriales family Aneuraceae genus Riccardia species Riccardia pusilla Name Homonyms Riccardia nana (Hook.f. & Taylor) Trevis. Riccardia nana Mizut. & S.Hatt.