Solidago ulmifolia
Sp. Pl. 3: 2060. 1803.
Plants 40–120 cm; caudices branching, woody. Stems usually 1, erect, glabrous, sparsely hairy in arrays. Leaves: basal when present similar to proximal cauline; proximal cauline often withering by flowering, tapering (sometimes rather abruptly) to short, winged petioles, blades ovate-lanceolate, 60–100(–150) × 30–40(–50) mm, thin, margins coarsely serrate, apices acute, abaxial faces hirsute on main nerves, adaxial sparsely hirsute to somewhat scabrous; mid to distal cauline subsessile to sessile, blades lanceolate, 20–50 × 5–20 mm, gradually reduced distally, margins entire. Heads 20–150, secund, in open paniculiform arrays, proximal branches elongate and widely divergent, sometimes pyramidal-secund with proximal branches short and recurved-secund. Peduncles 1.7–2 mm, sparsely to moderately short hispido-strigose, bracteoles 2–7, ovate, grading into phyllaries. Involucres 3–4 mm. Phyllaries (16–18) in 2–3 series, unequal; outer ovate, acute, inner linear-lanceolate, obtuse to acute. Ray florets 3–6; laminae 1–2 × 0.5–1 mm. Disc florets 4–7; corollas 2.7–3 mm, lobes 0.5–1.1 mm. Cypselae 1–1.6 mm, finely hairy; pappi ± 2.5 mm.
Distribution
N.S., Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Md., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., Nebr., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va., Wis.
Discussion
Varieties 2 (2 in the flora).
Solidago helleri is possibly a hybrid of S. ulmifolia with S. delicatula.
Selected References
None.
Key
| 1 | Stems glabrous or nearly so proximal to arrays; throughout range | Solidago ulmifolia var. ulmifolia |
| 1 | Stems distinctly spreading-hirsute; Arkansas, Mississippi, Missouri | Solidago ulmifolia var. palmeri |