Georgius Everhardus Rumphius, Herbarium Amboinense (Amstelaedami: Chanquion, 1741-1750) vol. 1 p. 161, tab. 60; cf. E. D. Merrill, An Interpretation of Rumphius's Herbarium Amboinense. Manilae: Department of Agriculture and Natural Resources, Bureau of Science, 1917 p. 332