Fig 4. Plot of introgression patterns for 14 microsatellite loci and 112 samples in the C. rostrata var. borealis dataset including three taxa in Carex section Vesicariae: the hybrid C. rostrata var. borealis (19 samples) and its putative parental species C. rostrata (69 samples) and C. rotundata (24 samples).

Carex rostrata is here defined as population 1 (P1), C. rotundata as population 2 (P2). Each rectangle in the plot represents an individual’s genotype at any given locus. The colours represent the ancestry of the genotype: dark green signifies a P1/P1 (C. rostrata) derived genotype, green a P1/P2 (mixed) genotype and light green a P2/P2 (C. rotundata) genotype. White rectangles indicate missing data. Marker Carspe_6867s was excluded from this analysis as it did not amplify in all samples.