Begonia tonkinensisBegonia tonkinensis is a plant species in the family Begoniaceae. The species is part of the section Diploclinium. It was described in 1919 by François Gagnepain.DescriptionThe Vietnamese name is Thu hải đường bắc bộ. It is a vascular plant, "commonly upright-stemmed, rhizomatous, or tuberous".DistributionThis species is native to Vietnam.