Flora of North America species comparison

1–5, sparsely to moderately strigoso-puberulent.

1–10+, erect, glabrous, sometimes sparsely hairy in arrays; usually with fascicles of small leaves in axils of distal leaves.

basal petioles 3–5 cm, blades oblanceolate or spatulate to ovate or rotund, 2–4 cm (excluding petioles);

cauline (numerous) subsessile or sessile, blades elliptic or lance-elliptic to ovate, mid mostly 25–50(–65) × 10–25 mm, distal much reduced;

branch leaf petioles 1 mm, blades ovate, 5–15 (excluding petioles) × 2–10 mm.

basal and proximal cauline tapering gradually to winged petioles, blades oblanceolate to ovate, 100–300 × 20–70 mm, usually multiple lateral nerves pronounced, margins sharply serrate, ciliate, faces glabrous;

mid to distal cauline sessile, blades linear-lanceolate, 30–50 × 8–11 mm, reduced distally, margins entire or finely serrate.

linear, 1–3 mm, bracteate.

1.5–6 mm, glabrous or sparsely strigillose;

bracteoles 0–2, linear.

narrowly campanulate, 3–5 mm.

narrowly campanulate, 3–4 mm.

0(–2).

7–12;

laminae 2–2.5 × 0.2–0.5 mm.

4–8;

corollas 3 mm, lobes 1 mm.

8–15;

corollas 2.5–3 mm, lobes 0.5–0.8 mm.

in 3–4 series, lanceolate, strongly unequal, margins ciliate, apices acute, glabrous.

in 3–4 series, strongly unequal, outer ovate, acute, inner lanceolate, obtuse.

75–200 in open paniculiform arrays, branches divaricate, ascending to recurved, weakly to strongly secund, to 50 cm, secondary branches less than 3 cm.

60–450, secund, in paniculiform arrays, openly secund-pyramidal with proximal branches spreading-recurved, or as broad as long with proximal branches widely ascending, recurved (elm-tree shaped).

2.5–3 mm, moderately short-strigose;

pappi 2 mm.

0.9–1.5 mm, sparsely strigose;

pappi 2.5–3.5 mm.

= 18.

= 18.