Cyperus echinatus (Linnaeus) Alph. Wood. Round-headed Flatsedge, Globe Flatsedge. Phen: Jul-Sep. Hab: Sandy woodlands, forests, fields, thin soils on outcrops, sand and gravel bars. Dist: CT and NY west to s. OH, IL, and se. KS, south to n. FL, TX, and ne. Mexico.

Origin/Endemic status: Native

Taxonomy Comments: See Carter and Jarvis (1986) for clarification of nomenclature.

Synonymy: = Ar, C, ETx1, FNA23, Il, K1, K3, K4, Mo1, NcTx, NE, Pa, Tn, Va, WH3; = Cyperus ovularis (Michx.) Torr. – G, GrPl, GW1, RAB, S, Tx, W, WV; > Cyperus ovularis (Michx.) Torr. var. ovularis – F; > Cyperus ovularis (Michx.) Torr. var. sphaericus Boeckeler – F

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