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Compositae Working Group (CWG) (2025). Global Compositae Database. Cirsium sect. Hymenolepis C.Shih. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1081468 on 2025-09-18
Marine Species Traits editorial board (2025). Marine Species Traits. Cirsium sect. Hymenolepis C.Shih. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1081468 on 2025-09-18