Horkelia Rchb. ex Bartl. Dataset GBIF Backbone Taxonomy Rank GENUS Published in Ord. Nat. Pl.: 76 (1830) Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Araceae genus Wolffia Name Homonyms Horkelia Cham. & Schltdl. Horkelia Rchb. ex Bartl.