Abstract
Carex accrescens Ohwi (1931: 255) is a sedge found in northeastern China, Korea, Japan, Mongolia and Russia (Govaerts et al. 2007, Dai et al. 2010, Park et al. 2016, Govaerts et al. 2018+). This species has been classified either as sect. Ammoglochin Dumortier (1827: 146) (Rotreklová et al. 2011) or sect. Holarrhenae (Döll) Pax (1888: 124) (Hoshino & Masaki 2011, Park et al. 2016). However, both sections have been determined as non-monophyletic, and the latest phylogenetic reconstructions (Global Carex Group 2016) recover it in a clade with members of sect. Holarrhenae s.s. and some North American species usually classified in sect. Phaestoglochin Dumortier (1827: 146).