Table 1.

ABBA-BABA statistic for the five species of Heteroplexis.

P1	P2	P3	D	Z-score	P	f4-ratio
H. vernonioides	H. impressinervia	H. incana	0.172	8.063	< 0.001	0.079
H. incana	H. vernonioides	H. sericophylla	0.118	3.911	< 0.001	0.010
H. incana	H. impressinervia	H. sericophylla	0.091	4.260	< 0.001	0.007
H. impressinervia	H. vernonioides	H. sericophylla	0.044	1.499	0.134	0.003

H. microcephala is outgroup. The Gene flow event in bold was consistent with Treemix detection.