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Compositae Working Group (CWG) (2021). Global Compositae Database. Calendula L.. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1077008 on 2024-09-29
Marine Species Traits editorial board (2024). Marine Species Traits. Calendula L.. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1077008 on 2024-09-29