Fig. 5

Summary results of the Approximate Bayesian Computation analysis of Opisthopappus assessed using DIYABC software analyses based on K = 2. a–c Scenarios 1–3. N1, N2, N1 + N2 represented effective population size of O. longilobus, O. taihangensis, and the common ancestor, respectively. Comparison of scenarios for direct estimate (d) and logistic regression (e) and both of them indicated that scenario 3 was the best support of these three scenarios. f The principal component analysis based on the posterior distributions for model checking in approximate Bayesian computation of the optimal scenarios 3