Publication: Syn. Pl. Glumac. 2: 242. 1855.
selected vouchers: WTU
Notes: H&C treats C. preslii as a synonym of C. pachystachya.
FNA23: "Carex preslii has been synonymized with C. pachystachya (A. Cronquist 1969; C. L. Hitchcock and A. Cronquist 1973; A. Cronquist et al. 1972+)."