Racomitrium hypnoides f. aterrimum (Saelan) Warnst. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Bryophyta class Bryopsida order Grimmiales family Grimmiaceae genus Racomitrium species Racomitrium lanuginosum Name Homonyms Racomitrium hypnoides f. aterrimum (Saelan) Warnst.