Rafflesia tuan-mudae, Rafflesia tuan-mudae Becc. – is a member of the Rafflesiaceae family. It lives as a parasite on the Tetrastigma vine. Etymologie: The tuan muda is a title – Tuan muda of Sarawak is the title of the Heir Presumptive to the Rajah of Sarawak. It literally means “little lord” or “young Prince”.