Reinwardtiodendron celebicum
Reinwardtiodendron humile
Remirea maritima
Rhododendron caespitosum
Rhododendron saxifragoides
Rhus nodosa – synonym of Toxicodendron nodosum
Rinorea anguifera
Rinorea javanica
Ryparosa calotricha
Ryparosa fasciculata
Ryparosa hullettii