Phaseolus laxiflorus Piper (1926: 692) [clade A; sect. Pedicellati (Bentham) Freytag].

TYPE: CG Pringle 13690 (HOLOTYPE: US-462384; ISOTYPES: GH-64092, MICH-1104260) .

It is not mentioned in “Vascular Plants of the Americas” (2020); it seems, however, to be a valid species distributed in the eastern part of the Mexican Trans-Volcanic Belt at 2100 m.

Specimen: MEXICO. Veracruz: GF Freytag 78-Mex-29 (CS-77522).