Damthongdee, A., Aongyong, K. and Chaowasku, T. (2021) “Orophea sichaikhanii (Annonaceae), a new species from southern Thailand, with a key to the species of Orophea in Thailand and notes on some species”, Plant Ecology and Evolution, 154(2), pp. 307-315. doi: 10.5091/plecevo.2021.1780.