1. Silviculture Research Institute, Vietnamese Academy of Forest Sciences, 46 Duc Thang, Bac Tu Liem District, Ha Noi, Vietnam
2. Department of Biology, Dalat University, 1 Phu Dong Then Vuong, Dalat, Vietnam
3. Dong Nai Culture and Nature Reserve, Ma Da, Vinh Cuu, Dong Nai, Vietnam
4. Department of Pharmacognosy, Hanoi University of Pharmacy, 13–15 Le Thanh Tong, Hoan Kiem District, Hanoi, Vietnam
5. College of Agronomy, Jiangxi Agricultural University, CN-330045 Nanchang, China