Compositae Working Group (CWG) (2025). Global Compositae Database.
Erigeron philadelphicus var. glaber J.K.Henry. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1158927 on 2025-03-26
Marine Species Traits editorial board (2025). Marine Species Traits.
Erigeron philadelphicus var. glaber J.K.Henry. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1158927 on 2025-03-26