Solidago ulmifolia Muhl.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Stems 4–12 dm, glabrous or nearly so below the infl, mostly solitary or paired from a caudex or short rhizome; lvs numerous, thin, sharply serrate, loosely hirsute at least on the midrib and main veins beneath; basal lvs wanting or with well developed, elliptic to elliptic-obovate blade abruptly contracted to the petiole, but generally soon deciduous; lowermost cauline lvs tending to be soon deciduous and smaller than the persistent ones just above, which are ovate or rhombic-ovate to elliptic or lance-elliptic, acute or acuminate, broadly short-petiolate or tapering and subsessile, mostly 6–12 × 1.2–5.5 cm, the lvs thence ± reduced upward, those at the base of the infl generally small, relatively broad, and often numerous; infl paniculiform, with recurved- secund branches, these generally few, elongate, and divergent, the heads crowded; invol 2.5–4.5 mm; rays 3–5, minute; disk-fls 4–7; achenes short-hairy; 2n=18. Woods; N.S. to Ga. and Fla., w. to Minn., Kans., and Tex. Ours is var. ulmifolia.