Astomum crispum var. sterilis (Nicholson) Moenk. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Weissia species Weissia sterilis Name Homonyms Astomum crispum var. sterilis (Nicholson) Moenk.