Cyathea gigantea var. polynervata R.H.Miou Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Cyatheales family Cyatheaceae genus Gymnosphaera species Gymnosphaera gigantea Name Homonyms Cyathea gigantea var. polynervata R.H.Miou Cyathea gigantea var. polynervata R.H.Miao