Harger's Canada Goldenrod
Solidago canadensis var. hargeri Fernald is distinguished by its lower to mid stems being moderately hairy (Semple & Cook 2006 FNA). The variety could be confused with S. altissima. Semple et al. (2015) noted the difficulties in distinguishing var. hargeri and diploid S. altissima var. gilvocanescens. Semple and Chmielewski (2022) reviewed previously published chromosome counts and published a map of the cytogeography for the species.
Solidago canadensis var. hargeri is naturalized in western Europe.
1-3. Solidago canadensis var. hargeri. 1. Dried shoot and lower stem, Poindexter 05-2014 WAT, Ashe Co., North Carolina. 3. Naturalized European form, London UK.
Semple, J.C., H. Rahman, H., S. Bvosky, M.K. Sorour, K. Kornobis, R. Lopez Laphitz, and L. Tong. 2015. A multivariate morphometric study of the Solidago altissima complex and S. canadensis(Asteraceae: Astereae). Phytoneuron 2015-10. 1–31.
Semple, J.C. and J.G. Chmielewski. 2022. Cytogeography of Solidagoser. Canadenses: S. brendae, S. canadensis, S. elongata, S. fallax, S. lepida, S. rupestris, S. shortii, and S. turneri (Asteraceae: Astereae). Phytoneuron 2022-57. 1-17.
Last revised 14 April 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated