Gymnostomum rupestre Schleich. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Gymnostomum species Gymnostomum aeruginosum Name Homonyms Gymnostomum rupestre Schleich. ex Schwägr. Gymnostomum rupestre Schleich.