Compositae Working Group (CWG) (2024). Global Compositae Database.
Pityopsis graminifolia var. latifolia (Fernald) Semple & F.D.Bowers. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1156838 on 2025-03-14
Marine Species Traits editorial board (2025). Marine Species Traits.
Pityopsis graminifolia var. latifolia (Fernald) Semple & F.D.Bowers. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1156838 on 2025-03-14