Hydrilla verticillata subsp. crispa Casp. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Hydrocharitaceae genus Hydrilla species Hydrilla verticillata Name Homonyms Hydrilla verticillata var. crispa Casp. Hydrilla verticillata subsp. crispa Casp.