Holcus sorghum subsp. effusus (Hack.) Hitchc. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Poaceae genus Sorghum species Sorghum arundinaceum Name Homonyms Holcus sorghum subsp. effusus (Hack.) Hitchc. Holcus sorghum var. effusus Hitchc.