Rafflesia tuan-mudae" at www.science.siu.edu/parasitic-plants/Rafflesiaceae/Raff.TuanMudae.page.html On January 1st 2020, a Rafflesia tuan-mudae discovered in the Maninjau Forest Reserve in West Sumatra was measured at a diameter of 111 cms , with a remarkable similarity in appearance to R. arnoldi.