Begonia pearcei

A small tuberous begonia from the Bolivian Andes with dark, velvety green leaves, sharply marked veins and small, bright yellow flowers. It is the only yellow-flowered tuberous species and the source of the yellow colour in all yellow Begonia x tuberhybrida cultivars. It grows in deep shade on steep, rocky banks in seasonally dry montane forest and dies back to its tuber in the dry winter. It remains rare in cultivation.