Cronquist's Rough-leaf or Wrinkle-leaf Goldenrod
Solidago rugosa var. cronquistiana Semple is native to higher elevations in the southern Appalachian Mts. Inflorescences are narrow, proximal branches do not much exceed the subtending leaves; herbage is sparsely hairy (Semple & Cook 2006 FNA). The variety is known only at the tetraploid level (2n=36). Longer branched inflorescences are similar to short-branched inflorescences of var. aspera. The variety was named in honor of the late Arthur Cronquist of the New York Botanical Garden.
1-3. Solidago rugosa var. sphagnophila, Semple & Suripto 9666, Mitchell Co., North Carolina. 1. Many shoots. 2. Typical narrow inflorescence. 3. Heads and large wasp pollinator.
Last revised 13 April 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated