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, Tat, Tx, W, WV; > Cyperus ovularis (Michx.) Torr. var. ovularis – F; > Cyperus ovularis (Michx.) Torr. var. sphaericus Boeckeler – F
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC
- Eastern Mountains and Piedmont: FACU
- Great Plains: FAC
- Midwest: FAC
- Northcentral & Northeast: FAC
Heliophily: 7
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