Mertensia excelsa J.JaySm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Gleicheniales family Gleicheniaceae genus Diplopterygium species Diplopterygium longissimum Name Homonyms Mertensia excelsa J.Sm. Mertensia excelsa J.JaySm.