Table 7 The result of nested clade phylogeographic analysis of Begonia luzhaiensis based on trnC-ycf6 haplotypes

1-1

H8 (I)

H9 (T)

I-T

D_c> ; D_n>

D_c> ; D_n>

1 → 2→3 → 4→No: Restricted gene flow with isolation by distance

1-2

H6 (I)

H7 (T)

I-T

D_n>

D_c< ; D_n<

D_c> ; D_n>

1 → 19 → No: Allopatric fragmentation

1-3

H2 (I)

H3 (I)

H4 (T)

D_c< ; D_n<

D_c< ; D_n>

D_c<

1 → 19 → No: Allopatric fragmentation

2-1

1-1 (T)

1-2 (I)

I-T

D_c< ; D_n<

D_c< ; D_n>

D_c> ; D_n>

1 → 2→3 → 5→15 → No → 21 → No: past gradual range expansion followed by fragmentation or a past larger range followed by extinction in intermediate areas

2-2

1-3 (I)

1-4 (T)

1-5 (T)

I-T

D_n>

D_c< ; D_n<

D_c>

1 → 2→3 → 5→15 → No → 21 → No: past gradual range expansion followed by fragmentation or a past larger range followed by extinction in intermediate areas

Total

2-1 (T)

2-2 (T)

D_c< ; D_n<

D_c< ; D_n>

1 → 19 → No: Allopatric fragmentation