Phaseolus angucianae Debouck & Araya (2018: 508) [possibly in clade A and sect. Brevilegumeni Freytag].

TYPE: DG Debouck et al.3369 (HOLOTYPE: USJ-111488; ISOTYPES: BRIT-476561, CR-286418, GH, K, MICH, MO, NY, P).

This is an endemic species from SE Costa Rica (Fig. 3), the distribution of which seems to be restricted to the “Fila Costeña Sur” in lower montane rain forest at 1400–1600 m. Because of deforestation its habitat seems shrinking (Debouck et al. 2018).

Specimens: COSTA RICA. Puntarenas: N Chaves-Barrantes 6 (USJ-111737), M Grayum 10618 (MO-6103483).