Hybridizations and genetic relationships among Lindernia species (Scrophulariaceae): L. procumbens and two subspecies of L. dubia

► Some Lindernia dubias' haplotypes were not coincident with common identification trait. ► Forty percent of F1 plants from two subspecies of L. dubia produced sterile pollen. ► There was no complete reproductive isolation between two subspecies of L. dubia.