TABLE 1.

Number of trees sampled from locations outside the hybrid zone (indicated with species name) and within the hybrid zone.

Cline	Y. brevifolia	Hybrid zone	Y. jaegeriana	Total
Vegetative traits
Branch number	288	2353	240	2881
Leaf length	278	2398	241	2917
Leaf width	288	2398	243	2929
Trunk height	254	1783	231	2268
Height	288	2398	235	2921
Floral traits
Petal length	36	424	61	521
Petal width	36	424	61	521
Pistil length	36	426	63	525
Pistil width	36	426	63	525
Style length	36	426	63	525
Style base width	36	426	63	525
Genomic
Chloroplast genotypes	59	127	29	215
SNP genotypes	62	183	63	308
Pollinator
Moth sp. frequency	16	72	13	101

The SNP category covers SNP Qscores as well as high F_ST, random SNPs, and analyses of loci associated with trait variation.