Medicinal source:

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