Carex oligosperma Michaux. Section: [26qq] Section 30 Vesicariae. Hab: Bogs, fens, and seeps at high elevations. Dist: NL (Newfoundland) west to NT, south to CT, c. PA, n. IN, WI, and MN; disjunct in ne. OH, WV (Hardy County) and NC (Ashe, Avery, Mitchell, and Watauga counties).
Origin/Endemic status: Native
Syn: = C, F, FNA23, G, K4, Mi, NE, NY, Pa, Mackenzie (1931-1935); > Carex oligosperma var. oligosperma – K1, K3