Nardia geoscyphus f. subaquatica Schiffn. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Marchantiophyta class Jungermanniopsida order Jungermanniales family Gymnomitriaceae genus Nardia species Nardia geoscyphus Name Homonyms Nardia geoscyphus f. subaquatica Schiffn.