1. Department of Plant SciencesQuaid‐i‐Azam University Islamabad Islamabad 45320 Pakistan
2. State Key Laboratory of Systematic and Evolutionary Botany, Institute of BotanyChinese Academy of Sciences Beijing 100093 China
3. University of Chinese Academy of Sciences Beijing 100049 China
4. CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of BiologyChinese Academy of Sciences Chengdu China
5. Department of ChemistryQuaid‐i‐Azam University Islamabad Pakistan