Gen. Sp. Aster., 178. 1832.
Plants 50–200 cm (short to long-rhizomatous, sometime colonial). Stems 1–10 (–20), ascending to erect, striate, glabrous or sparsely hairy. Cauline leaves: mid and distal crowded, blades broadly to narrowly elliptic, (35–) 60–110 (–150) × (5–) 13–25 (–35) mm, ± reduced distally, not stiff, bases attenuate, margins entire, involute, finely ciliate, apices acuminate, faces glabrous or sparsely hairy, especially along veins abaxially, or densely hairy. Heads (3–) 20–100 (–300+). Peduncles 1–10 mm, moderately to densely canescent; bracts linear-lanceolate to elliptic. Involucres 3–5 mm. Phyllaries in 3–4 series, triangular-lanceolate, midveins not swollen, apices finely subulate, strigose. Rays (2–) 5–10 (–16); laminae (4–) 7–10 (–12.3) × (0.8–) 1.2–1.8 (–2.7) mm. Disc-florets (5–) 11–26 (–50); corollas 3.5–6 mm, lobes 2–3.2 mm, 60–75% of limb. Cypselae 1.4–3.2 mm, 4–6-ribbed, sparsely to densely strigose; pappi: outer 0.2–0.8 mm, inner 3.5–6.2 mm. 2n = 18.
Alta., Man., N.B., N.S., Nfld. and Labr. (Nfld.), Ont., P.E.I., Que., Sask., Ala., Conn., Del., Ga., Ill., Ind., Iowa, Ky., Maine, Mass., Md., Mich., Minn., N.C., N.Dak., N.H., N.J., N.Y., Nebr., Ohio, Pa., R.I., S.C., Tenn., Va., Vt., W.Va., Wis.
Varieties 2 (2 in the flora).
|1||Leaves: abaxial faces sparsely piloso-villous (fewer than 10 hairs/mm 2); Newfoundland to Minnesota, s to n Alabama and Georgia||Doellingeria umbellata var. umbellata|
|1||Leaves: abaxial faces densely puberulent (more than 12 hairs/mm 2); n Ontario, s Manitoba (disjunct to Alberta) s to Nebraska, Iowa, Illinois||Doellingeria umbellata var. pubens|
"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.