Evaluation of Pharmacognostic Characteristics of the Leaf of Ageratum houstonianum Mill. Compositae. NJPR [Internet]. 28 de diciembre de 2020 [citado 21 de mayo de 2026];16(2):107-15. Disponible en: https://www.ojshostng.com/index.php/njpharmaceuticalsciences/article/view/1542