**2.6** *Goniothalamus marcanii*

*G. tamirensis* Pierre ex Finet & Gagnep is an accepted synonym for the species and is from the family Annonaceae. It occurs naturally in tropical and subtropical parts of Southeast Asia. 80%-EtOH extracts showed an in vitro antimalarial activity (IC50 = 6.3 μg/mL) against the drug resistant K1 strain of *P. falciparum* [28].
