Leavenworth's Goldenrod

Solidago leavenworthii Torr. & A. Gray is native to wet soils, thickets, edges of bogs, and wet prairies on the coastal plain from North Carolina to Florida.  The mid to upper stem leaves are finely serrate with 1-10 teeth, the largest 0.25–0.5 mm long (Semple & Cook 2006 FNA).  Plants can be similar to S. tortifolia and has the fine stem pubescence of the Tortifolia group of species.  The species includes tetraploids 2n=36 and hexaploids 2n=54, while S. tortifolia includes on diploids 2n=18.  Semple (2023) presented the cytogeography of S. leavenworthii.

Solidago leavenworthii replaces S. gigantea on the southern, outer Atlantic coastal plain and into Florida. The leaves of S. leavenworthii usually have fewer, smaller serrations than those of S. gigantea, and they have a distinctive dark, somewhat olive green color.

Inventor Thomas Edison had experimental bred plants of the species grown in Florida for rubber (Edison papers; Summers).

Sollidago leavenworthii range Semple draft