Figure 3.

Classification of the clines for 50 outlier SNP loci based on the characteristics presented in Figure 1. Separate regression analyses for the relationship between cline width and displacement from the hybrid zone center (A) were conducted for clines displaced toward the Ranunculus occidentalis allopatric region (yellow markers and yellow dotted line) and for clines displaced toward R. austro‐oreganus (red markers and red dotted line). A subset of the widest clines (w > 30 km) had centers displaced from the hybrid zone proportional to their width (A and B) and were classified as putative cases of adaptive introgression. A second subset of clines were exceptionally narrow (w < 500 m) and were classified as tension zones (B). Neutral introgression clines displayed introgression into both species ranges with centers having moderate levels of displacement from the hybrid zone center (B).