Blue-stem or Woodland or Wreath Goldenrod , verge d’or bleuâtre

Solidago caesia L. is a common woodland goldenrod in eastern North America. 

Solidago caesia range Cook & Semple draft

The stems are usually bluish to purple, glaucous and arching and the heads occur in small clustered subtended by large upper stem leaves (Semple & Cook 2006 FNA). The species is diploid 2n=18 throughout its range (Cook & Semple 2008).

 Solidago caesia axilliary clusters of heads ON

Two varieties were recognised in FNA based on work by R.E. Cook (Cook & Semple 2008; Cook et al. 2009).

Cook, R.E. and J.C. Semple. 2008. The cytogeography of Solidago subsect. Glomeruliflorae (Asteraceae: Astereae). Botany 86: 1488-1496.

Last update 7 November 2013 by J.C. Semple     

© 2013 J.C. Semple, including all photographs unless otherwise indicated