Nephrodium sparsum var. membranaceum Arn. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Athyriaceae genus Athyrium species Athyrium anisopterum Name Homonyms Nephrodium sparsum var. membranaceum Baker Nephrodium sparsum var. membranaceum Arn. ex C.B.Clarke Nephrodium sparsum var. membranaceum Arn.