1. Jiangsu Key Laboratory for the Research and Utilization of Plant Resources , , No. 1 Qianhu Houcun, Zhongshanmen Wai, Nanjing 210014 , China
2. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences , , No. 1 Qianhu Houcun, Zhongshanmen Wai, Nanjing 210014 , China
3. Nanjing Botanical Garden Mem. Sun Yat-Sen , No. 1 Qianhu Houcun, Zhongshanmen Wai, Nanjing 210014 , China
4. Co-Innovation Center for the Sustainable Forestry in Southern China , , 159 Longpan Road, Nanjing 210037 , China
5. Nanjing Forestry University , , 159 Longpan Road, Nanjing 210037 , China
6. Department of Agriculture , , 1936 North St, Nacogdoches, TX 75962-3000 , USA
7. Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University , , 1936 North St, Nacogdoches, TX 75962-3000 , USA