Compositae Working Group (CWG) (2024). Global Compositae Database.
Helianthus annuus var. globosus fistulosus. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits./aphia.php?p=taxdetails&id=1163517 on 2024-05-01
Marine Species Traits editorial board (2024). Marine Species Traits.
Helianthus annuus var. globosus fistulosus. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1163517 on 2024-05-01