Solidago tarda

Solidago tarda Mackenzie ex Small is a hexaploid (2n=54) member of the S. arguta complex . It occurs in more xeric environments than S. arguta and is found mostly on coastal plains. The populations are scattered in two disjunct areas, one centering on New Jersey and the other in the southeastern U.S. The basal leaves are truncate, and the plants are rhizomatous (Semple & Cook 2006 FNA). The species was found to be morphological close to S. ludoviciana in a multivariate analysis of S. sect. Argutae (Semple et al. 2021). Semple and Morton (2024) presented a map of the cytogeography of S. tarda with 6x counts from New Jersey, Georgia, and Alabama.

Solidago tarda range Semple draft

Last revised 19 May 2025 by J.C. Semple     

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

Solidago tarda, G. Morton 8272 (NY), New Jersey
Solidago tarda, rosette leaves, G. Morton 5136 (NY), New Jersey

1-2. Solidago tarda. 1. Shoot, G. Morton 8272 NY, Cape May Co., New Jersey. 2. Rhizome and leaf rosette,  G. Morton 5136 (NY), Cape May Co., New Jersey.

Semple, J.C., K. Nizamani, K. Kornobis, G. Samra, L. Tong and T. Stavroullakis. 2021. A multivariate study of Solidago sect. Argutae (Asteraceae: Astereae).  Phytoneuron 2021-20: 1–56. 

Semple, J.C. and G.H. Morton. 2024.  Cytogeography of Solidago sect. Argutae (Asteraceae: Astereae). Phytoneuron 2024-13: 1–13.