4.2.1. Macropsychanthus bicolor (Benth.) L.P. Queiroz & Snak comb. nov.

Basionym: Dioclea bicolor Benth., Comm. Legum. Gen.: 69. 1837. Type: Brazil, Amazonas ['Rio Negro’], Coari, Martius s.n. Obs. 2877 (lectotype, designated here from the syntypes: M! [0240649]; isolectotype: M! [0240648]).

Dioclea rostrata Benth., Comm. Legum. Gen.: 69. 1837. Type: Brazil, "Villa Nova do Almeida", Wied s.n. (lectotype, designated here from the isotypes: BR! [0000005197378]; isolectotype: BR! [0000005197040]), syn. nov.

Dioclea rostrata var. nitida Benth., Fl. Bras. 15(1): 168. 1859. Type: Brazil, Mato Grosso?, 'Salto do Curaú, rio Pardo’, Riedel 452 (560) (lectotype, designated here from the isotypes: LE! [00002539]; isolectotypes: A! [00066322], F! [0059202F], K! [000502901], NY! [01583820]), syn. nov.