Representative utricles images used for GM analyses. From the top to the bottom, left to right A problematic species: Carex herteri (Herter, W.G.F., 19091, S), C. hypsipedos (Weberbauer 2617, G) B C. phalaroides gr.: C. gibertii (Arechavaleta s.n., US), C. paraguayensis (L. Pereira-Silva 350, FLOR) and C. phalaroides (G. Rodríguez-Palacios 23GERP15, UPOS) C C. sect. Abditispicae: C. acaulis (DM Moore 1240, K), C. collumanthus (PJ Grubb 339, K), C. humahuacaensis (S. Martín-Bravo et al., 178SMB21, UPOS), C. ruthsatzae (G. Rodríguez-Palacios 46GERP15, UPOS), C. subantarctica (Marcia Waterway, MW2015.020, UPOS), and C. macrosolen (S. Martín-Bravo et al., 11SMB10, UPOS). Scale bar: 4 mm.