Comparative analysis of chemical composition in leaves and branches based on UPLC-Q-Orbitrap HRMS, and evaluation of their antioxidant activities.

This study comprehensively analyzes the chemical constituents of leaves and branches using UPLC-Q-Orbitrap HRMS. A total of 64 components were identified, with fragmentation patterns summarised for key compounds. Notably, 51 of these components were newly discovered in this plant.

 (Ericaceae), a new species of sect. from western Yunnan, China.

(Ericaceae), a new species from Yingjiang County of Yunnan Province, China is described and illustrated. This new species belongs to Vacciniumsect.Epigynium and is most similar to , but differs from the latter in the subsessile leaves, the inflorescence usually developing at leafless nodes, the shorter pedicels and the filaments being ca.