Fig. 2

Phylogeny tree of coastal plants in South China. The cladogram relationships were inferred from public data, referencing the APGIV system. Icons in the right refer to whether the species could be successfully clustered in monophyly for the single-marker or multi-marker barcode. Solid icons indicate that all conspecific individuals formed a single clade with a bootstrap value > 50%. Hollow icons show failures in identification. Blanks indicate missing data. Different colors and shapes distinguish the 15 barcodes. Red species names indicate true mangroves, purple names indicate mangrove associate species and black names indicate terrestrial coastal plants. Background highlights are the main branches of true mangroves: Acanthaceae, Lythraceae, Combretaceae, Rhizophoraceae. Colored round icons on the nodes represent rosids (R), asterids (A), monocot (M), and pteridophytes (P), respectively