Carex haydenii Dewey. Section: [26r] Section 13 Phacocystis. Hayden’s Sedge. Phen: May-Jun. Hab: Wet meadows, wet prairies, minerotrophic fens. Dist: NL (Newfoundland) and QC west to SD, south to s. PA, MD (C. Frye, pers. comm., 2000), IL, and IA.

Origin/Endemic status: Native

Synonymy: = C, F, FNA23, G, GrPl, Il, K1, K3, K4, Mi, Mo1, NE, NY, Pa, Mackenzie (1931-1935); = Carex stricta Lam. var. decora L.H.Bailey – Tat

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Wetland Indicator Status:

• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL

Heliophily ?: 9