Carex collinsii Nuttall. Section: [26tt] Section 33 Collinsiae. Phen: Jun-Jul. Hab: White cedar (Chamaecyparis) bogs, pocosins, and sphagnous, seepage-fed streamhead swamps in the Coastal Plain, bogs in the southwest mountains of NC (where associated with other Coastal Plain disjuncts), usually growing in Sphagnum. Dist: RI to wc. GA on the Coastal Plain, disjunct in the mountains of nw. NJ, PA, sw. NC, and possibly TN (Chester et al. 1993).
ID notes: C. collinsii is a very distinctive species; the slender perigynia teeth are reflexed 180 degrees (thus appressed back against the perigynium).
Origin/Endemic status: Native
Synonymy: = C, F, FNA23, G, K1, K3, K4, NE, NY, Pa, RAB, S, Tn, Va, W, Mackenzie (1931-1935); = Carex collinsiae – GW1, orthographic error