Flora of the Southeastern United States
2022 Edition

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References

Beck, J.B., M.L. Markley, M.G. Zielke, J.R. Thomas, H.J. Hale, L.D. Williams, and M.G. Johnson. 2021. Are Palmer's Elm-Leaf Goldenrod and the Smooth Elm-Leaf Goldenrod real? The Angiosperms353 Kit provides within-species signal in Solidago ulmifolia s.l. Syst. Bot. 46: 1107-1113.