Hieracium obscuratum subsp. violae Hieracium obscuratum subsp. obscuratum Hieracium obscuratum subsp. nigratum Hieracium obscuratum subsp. sampeyrense Hieracium obscuratum subsp. balmense
Hieracium coloratipes Hieracium erythropodum subsp. coloratipes Hieracium haematopodum subsp. coloratipes Hieracium haematopodum Hieracium integrifolium subsp. coloratipes Hieracium haematopodum subsp. haematopodum
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024