Fig. 7

Phylogenetic placement of Schweinfurthia papilionacea and S. imbricata based on chloroplast genome data.(A) Neighbor-Joining (NJ) tree including representatives from eleven tribes of Plantaginaceae, Scrophularia buergeriana (Scrophulariaceae), and the outgroup species Gentiana officinalis (Gentianaceae). (B) Maximum Likelihood (ML) tree constructed using the same taxon set. Both trees support the placement of Schweinfurthia within Plantaginaceae, distinct from Scrophulariaceae.