Pharmacognostic Studies and Artemisinin Content of Artemisia Annua L. Grown in Togo, Adjogblé, Messan Koffi, Bakoma Batomayena, Metowogo Kossi, Amouzou Kodjovi Dotsè, Potchoo Yao, Eklu-gadegbeku Kwashie, Aklikokou Kodjo A., and Gbeassor Menssanvi , Pharmacognosy Journal, October 2019, Volume 11, Issue 6, p.1331-1335, (2019)