Solidago rigida ssp. glabrata

Solidago rigida ssp. glabrata (E.L. Braun) Heard & Semple is distinguished by its hairless outer phyllaries and leaves and stems that are glabrous or ± hispid (Semple & Cook 2006 FNA).  The subspecies occurs in scattered locations on prairies, glades, savannas, dry open areas, especially on calcareous soils in the southeastern U.S. north to Missouri and Ohio (see map S. rigida).  The subspecies is diploid (2n=18).

The subspecies had been treated as Solidago corymbosa Ell., Oligoneuron corymbosum (Ell.) Small, Oligoneuron jacksonii (O. Ktze.) Small, and Aster jacksonii Kuntze.

Last revised 10 April 2025 by J.C. Semple

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