Carex aquatilis Wahlenberg var. substricta Kükenthal. Section: [26r] Section 13 Phacocystis. Aquatic Sedge. Hab: Mountaintop ponds (with Dulichium arundinaceum, Vaccinium macrocarpon, Juncus canadensis), mafic fens at high elevation, northwards in sedge meadows and shores. Dist: NL (Newfoundland) west to ND, south to NJ, s. PA, OH, IN, IA, and NE; disjunct in w. VA (Augusta County) and nw. NC (Bluff Mountain, Ashe County, NC).
Origin/Endemic status: Native
Syn: = C, FNA23, Mi, Mo1, Pa; = Carex substricta – Mackenzie (1931-1935); < Carex aquatilis – G, NY, Va; < Carex aquatilis ssp. altior – NE; < Carex aquatilis var. altior – F, GrPl; < Carex aquatilis var. aquatilis – K1, K3, K4