Solidago austrina Small. Hab: Piedmont prairie remnants, openings in xeric hardpan forests, upland depressions, clay roadbanks and powerline rights-of-way, post oak savannas, and open oak-hickory woodlands. Dist: Sc. NC south to GA, Panhandle FL, and nw. AL, possibly extending into TN and KY.
Origin/Endemic status: Endemic
Taxonomy Comments: The distinction between S. gracillima s.s. and S. austrina seems to be warranted; they are alleged to differ as follows: S. austrina: pappus 2.2-2.8 mm long, ray flowers 2-4, disc flowers 6-8; of the inner Coastal Plain and lower Piedmont; S. gracillima: pappus (3.0-) 3.5-4.0 mm long; ray flowers 3-7; disk flowers 9-13; of the Coastal Plain.
Synonymy: = F, G, K4, S, Tn; < Solidago gracillima Torr. & A.Gray – C, K1, RAB, SE1, W, WH3; < Solidago stricta Aiton ssp. gracillima (Torr. & A.Gray) Semple – FNA20