Secondary metabolites from the heartwood of Toxicodendron vernicifluum (Stokes) F. A. Barkley (Anacardiaceae) and their chemotaxonomic significance - Cai-Wen Meng; Chun-Zhi Zhao; Jie Liu; Wen-Jing Zu; Hong-Yun Bai; Jian-Yu Liu; Yong-Nan Xu; Mei-Chen Li (Biochemical Systematics and Ecology, 2026)