Mabberley, D. J.; Clark, J. L.; LeBlond, R.; MacDougal, J.; Méndez Santos, I. E.; Pastore, J. F. B.; Samain, M.-S.; Trock, D. (2020). Friedrich Dietrich v. Kurt Sprengel and their, largely American, plant-names. <em>Journal of the Botanical Research Institute of Texas.</em> 14(2): 241-253., available online athttps://www.jstor.org/stable/27007059[details] Available for editors
Compositae Working Group (CWG) (2026). Global Compositae Database. Packera dubia (Spreng.) Trock & Mabb.. Accessed at: https://compositae.org/gcd/aphia.php?p=taxdetails&id=1865406 on 2026-04-08
original descriptionMabberley, D. J.; Clark, J. L.; LeBlond, R.; MacDougal, J.; Méndez Santos, I. E.; Pastore, J. F. B.; Samain, M.-S.; Trock, D. (2020). Friedrich Dietrich v. Kurt Sprengel and their, largely American, plant-names. <em>Journal of the Botanical Research Institute of Texas.</em> 14(2): 241-253., available online athttps://www.jstor.org/stable/27007059[details] Available for editors