Medicinal source:

Napagoda, M.T., Shamila Malkanthi, B.M.A., Abayawardana, S.A.K., Qader, M.M. & Jayasinghe, L. (2016). Photoprotective Potential in Some Medicinal Plants used to Treat Skin Diseases in Sri Lanka. Complementary and Alternative Medicine. 16: 479.