Echinodorus rostratus var. lanceolatus Engelm. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Alismataceae genus Echinodorus species Echinodorus berteroi Name Homonyms Echinodorus rostratus f. lanceolatus (Engelm. ex S.Watson & Coult.) Fernald Echinodorus rostratus var. lanceolatus Engelm. ex S.Watson & Coult. Echinodorus rostratus var. lanceolatus Engelm.