Synonyms: Agrostis polydactyla; Anastrophus deludens; Anthaenantia columbiensis; Anthaenantia gigantea; Anthenantia columbiensis; Anthenantia gigantea; Axonopus deludens; Axonopus iridifolius; Axonopus mathewsii; Axonopus mexicanus; Axonopus micay (homotypic); Axonopus scoparius f. mattogrossense; Axonopus scoparius f. mattogrossensis; Axonopus scoparius f. scoparius; Axonopus scoparius f. typica; Axonopus scoparius glabriusculus; Axonopus scoparius mattogrossensis; Axonopus scoparius var. glabriusculus; Axonopus scoparius var. scoparius; Panicum columbiense; Panicum giganteum (heterotypic); Paspalum columbiense; Paspalum elatum; Paspalum fournierianum; Paspalum fournierianum maximum; Paspalum fournierianum var. maximum; Paspalum giganteum (heterotypic); Paspalum hackelianum; Paspalum iridifolium; Paspalum mathewsii; Paspalum oriziforme; Paspalum oryziforme; Paspalum oryziformis; Paspalum scoparium (homotypic); Paspalum tripinnatum