@article{ashfaq_ahmad_zafar_sultana_nazish_khan_2020,  title={Systematics of medicinally important weeds of genus Convolvulus: Convolvulaceae},  volume={38},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582020380100053},  DOI={10.1590/S0100-83582020380100053},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={Ashfaq, Shomaila and Ahmad, Mushtaq and Zafar, Muhammad and Sultana, Shazia and Nazish, Moona and Khan, Abdul N.},  year={2020},  pages={e020216203} }