Apium carsonii (Durand ex A.Gray) Benth. & Hook.f. ex B.D.Jacks. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Apiales family Apiaceae genus Sium species Sium carsonii Name Homonyms Apium carsonii Benth. & Hook.f., 1867 Apium carsonii (Durand ex A.Gray) Benth. & Hook.f. ex B.D.Jacks. Apium carsonii (Durand ex A.Gray) Alph.Wood