Phaseolus lignosus Britton (1918: 183)

Phaseolus lignosus Britton (1918: 183) View in CoL [clade B; sect. Paniculati Freytag]. TYPE (LECTOTYPE): Fig. 205 in “Flora of Bermuda ”(from C Watlington 3: EPITYPE K-556376and K-556377; ISOEPITYPES: BRIT, CAS,COL,F, FHO, FI, G,GH, MEXU, MICH,MO, NCU, NY, P; see Debouck 2015).

Reasons were presented elsewhere ( Debouck 2015) for choosing an epitype (and several duplicates from a single gathering), since the original type was an illustration. So, the “ Bermuda bean” was confused with wild P. lunatus as indicated on some labels ( Debouck 2019a); the differences on living plants however are striking ( Debouck 2015) ( Fig. 10 View FIG ). It is not mentioned in the list of “Vascular Plants of the Americas” ( Tropicos 2020), although in author’s view it is a valid species of the section Paniculati (also validated by Delgado-Salinas et al. 1999). This species is endemic to the Bermuda archipelago where 29 mature individuals thrive, explaining its status of critically endangered ( Copeland et al. 2014).

Specimens: BERMUDA. Long Island: E Manuel 637 (A), C Watlington 3 (K-650154).