Cyperus engelmannii Steudel. Slender Sand Flatsedge. Phen: Jul-Oct. Hab: Alluvial and other damp to wet soils. Dist: North-central and northeastern North America, MA west to s. ON, MN and NE, south to se. NC and MO. Distribution in our region is poorly known.

Origin/Endemic status: Native

Synonymy: = F, G, GrPl, GW1, Il, Mi, NY, Pa, RAB, S, Tat, Tucker & Gandhi (2019); = Cyperus odoratus L. var. engelmannii (Steud.) R.Carter, S.D.Jones, & Wipff – Va; < Cyperus odoratus L. – Ar, C, ETx1, FNA23, Il, K1, K3, K4, Mo1, NcTx, NE, W, WH3

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACW (taxonomic split from wetland indicator species)
• Great Plains: FACW (taxonomic split from wetland indicator species)
• Midwest: FACW (taxonomic split from wetland indicator species)
• Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily: 6