Hookeria affinis Arnell Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Hookeriales family Pilotrichaceae genus Callicostella species Callicostella depressa Name Homonyms Hookeria affinis Arn. Hookeria affinis Arnell Hookeria affinis (Müll.Hal.) Müll.Hal.