Phaseolus smilacifolius Pollard (1896: 233) [clade B; sect. Paniculati Freytag].

TYPE: GV Nash 2505 (HOLOTYPE: US-252673; ISOTYPES: F-48642, G, GH-64080, K, MICH-1104263, MSC, P, PH).

The fact that this species has been found in another county of Florida 101 years after the type collection lessens seriously the hypothesis of this species being a natural hybrid between P. polystachyus and P. sinuatus (Isely 1990, p. 156) . Further, the planting of seeds with a progeny identical to the parents confirmed P.smilacifolius as a distinct species (Abbott & Judd 2000, p. 497).With few collections from central Florida, it should be considered an endemic; from these few collections it is reported growing on hammock land in oak-juniper-palmetto association. According to Dohle and co-workers (2019), it seems that no accessions are currently kept in genebanks.

Specimens: U.S.A. Florida: JR Abbott 9557 (WIS), AS Hitchcock 483 (F-232856).