In between Symphytum and Bolax which one is endemic to temperate South America?
Symphytum Symphytum is a genus of flowering plants in the family Boraginaceae. Its species are known by the common name comfrey. There are up to 35 known species. Some species and hybrids, particularly "S. officinale" and "S." × "uplandicum", are used in gardening and herbal medicine.
Olmediella Olmediella is a monotypic genus of flowering plants in the willow family, Salicaceae. It consists of one species of trees: Olmediella betschleriana, which is native to Central America. Formerly placed in the heterogeneous family Flacourtiaceae, "Olmediella" is now classified in Salicaceae, along with close relatives "Bennettiodendron", "Carrierea", "Idesia", "Itoa", "Macrohasseltia", "Poliothyrsis", and even the willows ("Salix") and cottonwoods ("Populus") themselves.