Phaseolus macrolepis Piper (1926: 698) [clade A; sect. Bracteati Freytag].
TYPE: O Salvin s.n. (HOLOTYPE: K-478468; no isotypes seen so far, nor mentioned in the original publication).
This species, reference of the Bracteati, grows in the now much logged old-growth pine forests, endemic of the volcanic axis of SW Guatemala at 2200–3000 m. It is not reported in the list of “Vascular Plants of the Americas” (Tropicos 2020).
Specimens: GUATEMALA. Chimaltenango: JC Montero-Castro 245 (NY). Sololá: DG Debouck 3095 (K).