Solidago ouachitensis

Ouachita Mountains Goldenrod

Solidago ouachitensis C.E.S. Taylor & R.J. Taylor is rare on mesic, north-facing slopes in the Ouachita Mts. western Arkansas and eastern Oklahoma. Historically, Solidago ouachitensis has been included in S. caesiaÌý´Ç°ùÌýS. curtisii; it is ecologically and morphologically distinct (). In the polygenomic phylogeny of Solidago, S. ouachitensis came out as the basal branch in sect. Glomeruliflorae (Semple et al. 2023). The species is diploid (2n=18).

Solidago ouachitensis range Cook & Semple draft

Semple, J.C., H. McMinn-Sauder, M. Stover, A.Lemmon, E. Lemmon, and J.B. Beck. 2023. Goldenrod herbariomics: Hybrid-sequence capture reveals the phylogeny of diploid Solidago. Amer. J. Bot. 110(7): e16164.https://doi.org/10.1002/ajb2.16164

Last revised 11 April 2025 by J.C. Semple     

© 2025 J.C. Semple, including all photographs unless otherwise indicated

Solidago ouachitensis, Polk Co., Arkansas
Solidago ouachitensis IT GH leaf
Solidago ouachitensis IT GH hds
Solidago ouachitensis, fruits, Polk Co., Arkansas

1-2. Solidago ouachitensis. 1. Isotype, Taylor & Taylor 32788 NY, Leflore Co., Oklahoma. 2-4. Leaf, heads, fruit body, Taylor & Taylor 32786 GH, Polk Co., Arkansas.Â