Hieracium bourgaei subsp. sastronii Hieracium bourgaei subsp. baeticum Hieracium bourgaei subsp. eliasii Hieracium bourgaei subsp. bourgaei Hieracium bourgaei subsp. vestitiforme
Hieracium bicolor subsp. bourgaei
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024