Synonyms: Cyperus bracteolatus; Cyperus californicus; Cyperus carruthii; Cyperus cubanus; Cyperus densiflorus (heterotypic); Cyperus distans (heterotypic); Cyperus eggersii; Cyperus eggersii var. laticeps; Cyperus engelmannii; Cyperus erythrorhizus; Cyperus familiaris; Cyperus ferax engelmannii; Cyperus ferax f. parvus; Cyperus ferax speciosus; Cyperus ferax var. bulbifer; Cyperus ferax var. densiflorus; Cyperus ferax var. engelmannii (homotypic); Cyperus ferax var. maximiliani; Cyperus ferax var. novae-hannoverae; Cyperus ferax var. squarrosus; Cyperus ferox; Cyperus ferruginescens; Cyperus flavicomus (heterotypic); Cyperus flexuosus (heterotypic); Cyperus fossarum; Cyperus fragilis; Cyperus granadinus; Cyperus haenkei; Cyperus hamiltonii; Cyperus horizontalis (heterotypic); Cyperus huarmensis; Cyperus jubaeiflorus; Cyperus laetus var. obtusiflorus; Cyperus lenticularis; Cyperus lomentaceus; Cyperus longiradiatus; Cyperus longispicatus; Cyperus lucidus (heterotypic); Cyperus macrocephalus var. eggersii; Cyperus maximiliani (heterotypic); Cyperus michauxianus; Cyperus multibracteatus; Cyperus multiceps (heterotypic); Cyperus nitidulus; Cyperus nortonii; Cyperus novae-hannoverae; Cyperus odoratus var. attenuatus; Cyperus odoratus var. curtispiculus; Cyperus odoratus var. engelmannii; Cyperus odoratus var. novae-hannoverae; Cyperus odoratus var. squarrosus; Cyperus oerstedii; Cyperus parvispiculatus; Cyperus parvus; Cyperus pennatus (heterotypic); Cyperus phleoides (heterotypic); Cyperus poeoides; Cyperus pohlianus; Cyperus prescottianus; Cyperus pseudostrigosus; Cyperus raiateensis; Cyperus raphiostachys; Cyperus reineckei; Cyperus rufinus; Cyperus sanctae-crucis; Cyperus speciosus (heterotypic); Cyperus speciosus var. ferruginescens; Cyperus speciosus var. parvus; Cyperus speciosus var. squarrosus; Cyperus stellatus (heterotypic); Cyperus tenuior; Cyperus vahlii (heterotypic); Cyperus virginicus (homotypic); Diclidium auriculatum; Diclidium ferax (homotypic); Diclidium ferox (homotypic); Diclidium lenticulare (homotypic); Diclidium lomentaceum; Diclidium maximiliani (homotypic); Diclidium reinwardtii (homotypic); Diclidium uliginosum (homotypic); Mariscus familiaris; Mariscus ferax; Mariscus huarmensis; Mariscus pohlianus; Mariscus rhaphiostachys; Torulinium confertum; Torulinium eggersii; Torulinium ferax; Torulinium ferox; Torulinium macrocephalum var. davidsei; Torulinium macrocephalum var. eggersii; Torulinium michauxianum