Based on Mabberley (2020), the earlier species name Packera dubia has precedence, and has been accepted for this species by Plants of the World Online, Weakley (2022, the primary botanical authority in the SE US), and others.
References:
Mabberley, D.J. 2020. Friedrich Dietrich v. Kurt Sprengel and their, largely American, plant-names. J. Bot. Res. Inst. Texas 14: 241-253.
Weakley, A.S., and Southeastern Flora Team 2022. Flora of the southeastern United States. University of North Carolina Herbarium, North Carolina Botanical Garden.
Based on Mabberley (2020), the earlier species name Packera dubia has precedence, and has been accepted for this species by Plants of the World Online, Weakley (2022, the primary botanical authority in the SE US), and others.
References:
Mabberley, D.J. 2020. Friedrich Dietrich v. Kurt Sprengel and their, largely American, plant-names. J. Bot. Res. Inst. Texas 14: 241-253.
Weakley, A.S., and Southeastern Flora Team 2022. Flora of the southeastern United States. University of North Carolina Herbarium, North Carolina Botanical Garden.