1. Andersson L, Persson C (1991) Plant Syst Evol 178:65–94
2. Ridsdale CE (1978) Blumea 24:43–100
3. Pinner J, Bence TA, Davies RA, Lloyd KM (Hrsg.) (1893–1985) Index Kewensis, Clarendon Press, Oxford
4. Sir Hooker JD (1882) The Flora of British India, L.Reeve & CO., London, Bd. III, S. 28–35
5. Oliver D (1877) Flora of Tropical Africa, L.Reeve & CO., London, Bd. III, S. 41–42