Oxypetalum sylvestre (Hook. & Arn.) Goyder & Rapini, comb. nov.

Basionym: Schistogyne sylvestris Hooker & Arnott (1834: 292) . Type: “Banda Orientale”, no date, J . Baird s.n. (lectotype (here designated) K!). Paratypes: ARGENTINA. Entre Rios: no locality, no date, J . Tweedie 219 (K!). URUGUAY. Without locality, no date, J . Tweedie s.n. (K!) .