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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Long-term persisting hybrid swarm and geographic difference in hybridization pattern: genetic consequences of secondary contact between two Vincetoxicum species (Apocynaceae–Asclepiadoideae)

Fig. 1

Maps of the hybrid zone between V. atratum and V. japonicum and of morphologically ‘pure’ V. atratum populations. a Map of Japan showing locations of the hybrid zone and morphologically ‘pure’ V. atratum populations (filled red cube) and V. japonicum populations (filled green circles). b, c Detailed map of the hybrid zones showing the putative hybrid sampling sites (blue diamond). Additional details for each population are shown in Additional file 1: Table S1

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