Julie's Goldenrod
Solidago juliaeÌýNesom is native to the Hill Country and Trans-Pecos region of Texas and rarely in northern Mexico.Ìý A specimen from Sonora may be an atypicalÌýS. juliaeÌýindividual. Specimens from Arizona are similar but have less densely hairy leaves, but these are individuals ofÌýS. velutinaÌýthat lack lower stem leaves, which are large and triplinerved when present.ÌýSolidago juliaeÌýis the most densely short-hairy of theÌýTortifoliaeÌýgroup of species in subsect.ÌýTriplinerviae; the narrow leaves are similar in shape to those ofÌýS. altiplanities.ÌýSolidago juliaeÌýcan be similar to some plants ofÌýS. chilensisÌýof South America andÌýS. pringleiÌýof Mexico.Ìý
Solidago juliae has been included in several multivariate studies involving different species ofÌýSolidago.Ìý Semple et al. (2015) reported strong statisical support for recognizingÌýS. altiplanities,ÌýS. altissima,ÌýS. juliae, andÌýS. canadensisÌýin a multivariate study. Ìý Lopez Laphitz and Semple (2015) reported strong statistical support for recognizingÌýS. juliaeÌýin a multivariate study ofÌýS. chilensis, S. juliae,ÌýS. leavenworthii,ÌýS. microglossa, andÌýS. tortifolia.Ìý Semple and Lopez Laphitz (2016) comparedÌýS. altiplanities,ÌýS. chilensis,ÌýS. gypsophila,ÌýS. juliae,ÌýS. leavenworthii,ÌýS. microglossa,ÌýS. pringlei, andÌýS. tortifoliaÌýin a study focused onÌýS. gypsophilaÌýandÌýS. pringlei.Ìý Semple et al. (2018) includedÌýS. juliaeÌýin a study ofÌýS. durangensis.ÌýÌýSolidago juliaeÌýwas also included in multivariate study ofÌýS. altissima,ÌýS. juliae,ÌýS. pringlei, andÌýS. veracruzensisÌý(Semple 2018) in whichÌýS. juliaeÌýwas most morphologically similar toÌýS. pringleiÌýandÌýS. veracruzensis based on the characters selected to separate the species.
Solidago canadensisÌývar.ÌýcanescensÌýA. Gray is a synonym.Ìý
The species is diploid (2n=18) and sometimes tetraploid (2n=36).
Last revised 15 April 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated
1-4. Solidago juliae.Ìý1. Dried shoot, Nesom & Nesom 2711 WAT, Gillespie Co., Texas. 2-4. Stem, leaves, heads, Nesom 7212 with Julia Nesom WAT isotype, Kerr Co., Texas.
Semple, J.C., H. Rahman, H., S. Sbovski, M.K. Sorour, K. Kornobis, R. Lopez Laphitz, and L. Tong. 2015.Ìý A multivariate morphometric study of theÌýSolidago altissimaÌýcomplex andÌýS. canadensis(Asteraceae: Astereae).Ìý Phytoneuron 2015-10. 1–31.
Lopez Laphitz, R. and J.C. Semple. 2015. A multivariate morphometric analysis of theÌýSolidago chilensisÌýcomplex in South America and related taxa in North America (Asteraceae: Astereae).Ìý Ann. Mo. Bot. Garden 100(4): 423-441.
Semple, J.C. and R. Lopez Laphitz. 2016.Ìý OnÌýSolidago gypsophilaÌýandÌýS. pringleiÌý(Asteraceae: Astereae), rare and not so rare Mexican endemics:Ìý a multivariate study of the Tortifoliae group ofÌýS.Ìýsubsect.ÌýTriplinerviae.Ìý Phytoneuron 2016-29. 1-20.
Semple, J.C., R. Lopez Laphitz, H. Rahman, and Yunfei Ma. 2016. On Solidago durangensis (Asteraceae: Astereae): a multivariate study with specimens of S. subsect. Junceae, S. subsect. Maritimae, and S. subsect. Triplinerviae.ÌýÌý Phytoneuron 2016-49: 1–19.
Semple, J.C.Ìý 2018.ÌýÌýSolidago veracruzensis, a new species of goldenrod inÌýS.Ìýsubsect.ÌýTriplinerviaeÌý(Asteraceae: Astereae) from Mexico. Phytoneuron 2018-52: 1–18.