Compositae Working Group (CWG) (2025). Global Compositae Database.
Hieracium prenanthoides subsp. hoegeri Zahn. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1152258 on 2025-03-29
Marine Species Traits editorial board (2025). Marine Species Traits.
Hieracium prenanthoides subsp. hoegeri Zahn. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1152258 on 2025-03-29