Synonyms: Cyperus aethiops var. circinatus; Cyperus aquatilis (heterotypic); Cyperus boivinii; Cyperus caespitosus (heterotypic); Cyperus chlorostachys; Cyperus circinatus; Cyperus fascicularis (heterotypic); Cyperus gatesii; Cyperus hahnianus; Cyperus hookerianus (heterotypic); Cyperus incrassatus (homotypic); Cyperus liebmannii; Cyperus litos; Cyperus olidus; Cyperus olivaceus; Cyperus paniculatus (heterotypic); Cyperus polystachyos f. minor (homotypic); Cyperus polystachyos f. pernanus; Cyperus polystachyos var. caespitosus; Cyperus polystachyos var. chlorostachys; Cyperus polystachyos var. circinatus; Cyperus polystachyos var. fascicularis; Cyperus polystachyos var. glaucescens; Cyperus polystachyos var. hahnianus; Cyperus polystachyos var. hookerianus; Cyperus polystachyos var. longispiculatus; Cyperus polystachyos var. macrostachyus; Cyperus polystachyos var. miser; Cyperus polystachyos var. pallidus; Cyperus polystachyos var. paniculatus; Cyperus polystachyos var. thouarsii; Cyperus polystachyus var. paniculatus (heterotypic); Cyperus scopellatus; Cyperus sonderi; Cyperus strictus (heterotypic); Cyperus tenuis (heterotypic); Cyperus teretifructus; Cyperus texensis; Cyperus thouarsii; Pycreus caespitosus; Pycreus caespitosus var. minor; Pycreus odoratus; Pycreus odoratus var. hahnianus; Pycreus paniculatus; Pycreus polystachyos circinatus; Pycreus polystachyos paniculatus (heterotypic); Pycreus polystachyos var. brevispiculatus (homotypic); Pycreus polystachyos var. circinatus; Pycreus polystachyos var. hahnianus; Pycreus polystachyos var. paniculatus