Appendix 1.
Voucher information for Handroanthus billbergii samples used in this study.a
| Species | Collection locality | Geographic coordinates | N |
| H. billbergii (Bureau & K. Schum.) S. O. Grose | Mangahurco, Loja, Ecuador (Population 1) | 4°8′6.108″S, 80°26′22.812″W | 9 |
| H. billbergii | Puna, Guayas, Ecuador (Population 2) | 2°42′57.204″S, 80°5′27.204″W | 7 |
| H. billbergii | Arenillas, El Oro, Ecuador (Population 3) | 3°29′2.112″S, 80°6′28.583″W | 7 |
| H. chrysanthus (Jacq.) S. O. Grose | Mangahurco, Loja, Ecuador | 4°8′6.108″S, 80°26′22.812″W | 3 |
Note: N = number of analyzed individuals.
a
Representative trees (codes Tb24 and Tb37) used for developing the markers were sampled from population 1.