Hieracium evolutum Hieracium sparsiflorum subsp. sparsicrinum Hieracium pseudokotschyanum Hieracium sparsum subsp. borbasii Hieracium sublubricicaule Hieracium borbasii subsp. borbasii Hieracium borbasii
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024