Figure S1

Principal component analysis (PCA) of specimens of Peperomia segregata and Peperomia glabella and varietities. The red dots are the specimens of Peperomia segregata and the black dots are the specimens of Peperomia glabella. The blue dots are the specimens identified as Peperomia glabela var. glabella, the pink dots are the specimens identified as Peperomia glabella var. nervulosa, the green dots are the specimens identified as Peperomia glabella var. nudipetiolata and the purple dots are the specimens identified as Peperomia glabella var. nigropunctata.