Department of Biology
ESC 350
200 University Ave. W
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567 ext. 32569
Fax: (519) 746-0614
Twist-leaf goldenrod
Solidago tortifolia Elliott is native to dry, usually sandy soils in pinelands and embankments on the coastal plain of the southeastern U.S. It has linear to linear-lanceolate leaves that are reduced upward and the lower leaves that often twist into coils when senesced but persist on the stem (Semple & Cook 2006 FNA). Unlike the closely related S. juliae and S. leavenworthii, which have elongated narrow secund pyramidal inflorescences, the inflorescence of S. tortifolia can be broadly pyramidal with more elongated lower branches. The species is diploid 2n=18. Semple (2023) presented the cytogeography of the species.
Semple, J.C. 2023. The cytogeography of Solidago juliae, S. leavenworthii, and S. tortifolia (Asteraceae: Astereae). Phytoneuron 2023-21: 1–12.
Revised 24 July 2023 by J.C. Semple
© 2023 J.C. Semple, including all photographs unless otherwise indicated