Phaseolus novoleonensis Debouck (2006: 105) [clade B; sect. Coriacei Freytag].

TYPE: DG Debouck 2061 (HOLOTYPE: IBUG; ISOTYPES: ANSM, BR, CHAPA, COL, ENCB, F, G, K-478467, MEXU, MICH-1287074, MO, P, SI, UC, US).

A member of the Coriacei with rounded leaflets. One more population could have been found recently (Acosta-Díaz et al. 2015); the species is however considered as endangered because of its extremely small range (Acosta-Díaz et al. 2019).

Specimen: MEXICO. Nuevo León: AE Estrada-Castillón 633 (ANSM-33436).