Begonia melanobullata

Begonia melanobullata, the Vietnamese black peak begonia or Vietnam ferox, is a species of flowering plant in the family Begoniaceae, native to Vietnam. It was first documented in limestone karst areas across the Sino-Vietnamese border. Begonia melanobullata is noteworthy for having hair-tipped, dark-colored conical bullae across the upper leaf surface. It has red flower stalks, and red-streaked, green tinted flowers and seed capsules. It is very similar to Begonia ferox and Begonia nahangensis but differs in size and leaf shape....read more on Wikipedia.