This southern Appalachian taxon may be a hexaploid derived from hybridization of V. simulatum and V. altomontanum Ashe (a lowbush blueberry from higher altitudes). The only Ky. records of constablaei are colls. of B from CLIN, ELLI and PULA (perhaps at US); these need to be rechecked. Soltis et al. (2008) did map the range of such hexaploids close to se. Ky.