In between Symphytum and Bolax which one is endemic to temperate South America?
Bolax Bolax is a genus of flowering plant in the Apiaceae, with 4 or 5 species. It is endemic to temperate South America.
Benthamiella Benthamiella is a genus of plants in the Solanaceae family, native to Patagonia in southern South America. Its species have been described as "attractive, small, cushion plants".