Hieracium leiocephalum subsp. leiocephalum Hieracium leiocephalum subsp. calocalycinum Hieracium leiocephalum subsp. bupleuropsis Hieracium leiocephalum subsp. timaviense Hieracium leiocephalum subsp. abortivum Hieracium leiocephalum subsp. subumbellatum Hieracium leiocephalum subsp. melanocalyx Hieracium leiocephalum subsp. besenellum
Hieracium leiosoma subsp. leiosoma Hieracium leiosoma
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024