Compositae Working Group (CWG) (2024). Global Compositae Database.
Hieracium murorum subsp. phegophilum Zahn. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1154928 on 2024-11-22
Marine Species Traits editorial board (2024). Marine Species Traits.
Hieracium murorum subsp. phegophilum Zahn. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1154928 on 2024-11-22