Fig. 2.

a Dendrogram reconstructed for molecular phylogenetic analysis using 14 matk gene partial sequences of orchid species by maximum likelihood method. b Dendrogram reconstructed for molecular phylogenetic analysis using 11 Ycf2 partial gene sequences of orchid species by maximum likelihood method. c Dendrogram reconstructed for molecular phylogenetic analysis using 8 psbD partial gene sequences of orchid species by maximum likelihood method. d Dendrogram reconstructed for molecular phylogenetic analysis using 10 Ycf2 partial gene sequences of orchid species by maximum likelihood method