Alopecurus geniculatus subsp. robustior Hack. ex Kneuck. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Alopecurus species Alopecurus geniculatus Name Homonyms Alopecurus geniculatus f. robustior Hack. ex Kneuck. Alopecurus geniculatus f. robustior Hack.