Begonia ulmifolia

Begonia ulmifolia, the elm-leaf begonia, is a species of flowering plant in the family Begoniaceae. It is native to South America; Trinidad and Tobago, Venezuela, the Guianas, and eastern Brazil, and introduced to Mauritius, Réunion, and the Seychelles in the Indian Ocean. Cultivated for its ornamental foliage more than its flowers, it is suitable for green roofs in hot and humid areas.