Equisetum eburneum var. serotinum A.Braun Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum braunii Name Homonyms Equisetum eburneum var. serotinum A.Braun ex Engelm. Equisetum eburneum var. serotinum A.Braun Equisetum eburneum var. serotinum Silliman