Phaseolus tuerckheimii Donnell-Smith (1913:54) [clade A; sect. Brevilegumeni Freytag].

TYPE: H von Tuerckheim II-1536 (LECTOTYPE: US-942247; ISOLECTOTYPES: BR, US-860832, US-942248) . SYNTYPE: H Pittier 10539 (US-942246) .

John Donnell Smith referred to two collections, the one by Hans von Türckheim (no. II-1536) and the one by Henri Pittier (no. 10539) in that order, without indicating the holotype. As there were several duplicates of no. II-1536 at the US National Herbarium, the selection of the voucher US-942247 by George Freytag as nomenclatural type seemed appropriate: it would have been impossible for JD Smith to write down a description of the floral parts of P.tuerckheimii without dissecting its flower! This species is a tall (6–10 m) vine growing in the moist montane forests of Central America at 1500–2600 m (Araya-Villalobos et al. 2001) (Fig. 3).

Specimens: MEXICO. Chiapas: U Bachem 398 (CHAPA). GUATEMALA. Huehuetenango: LO Williams 22323 (F-1656438). El Quiché: AJ Sharp 45191 (MEXU-136531). Quezaltenango: DG Debouck 3085 (AGUAT). Sololá: DG Debouck 3097 (AGUAT). Chimaltenango: DG Debouck 1624 (MICH-1180126). Sacatepéquez: M Véliz 14771 (MO-5871374). Guatemala: DG Debouck 2473 (US-3168469). Jalapa: JA Steyermark 32551 (F-1035022). El Progreso: DG Debouck 2418 (COL-324860). Zacapa: JA Steyermark 42471 (F-1202181). COSTA RICA. San José: JL Luteyn 4541 (DUKE-242717). PANAMA. Chiriquí: R Villareal 494 (PMA-108353).