Flora of North America species comparison

1–6(–10), erect, short-canescent (hairs ascending to appressed).

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

basal and proximal cauline tapering to long, winged petioles, blades spatulate-ovate to oblanceolate, 20–95 × 7–15 mm, margins crenate to entire, apices acute, faces densely puberulent;

mid and distal cauline (sometimes subtending axillary tufts of lateral branch leaves) sessile, blades linear-oblanceolate, 16–45 × 3–7 mm, reduced distally, margins entire.

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.

2–3.5 mm, bracteoles 0–4, linear.

1.5–6 mm, glabrous or sparsely strigillose;

bracteoles 0–2, linear.

narrowly campanulate, 2.6–5.8 mm.

narrowly campanulate, 3–4 mm.

5–11;

laminae 2.8–5.5 × 0.3–0.7 mm.

7–12;

laminae 2–2.5 × 0.2–0.5 mm.

3–10; 2.5–4.6 mm, lobes 0.4-0.6 mm.

8–15;

corollas 2.5–3 mm, lobes 0.5–0.8 mm.

in 3 series, ovate to linear-lanceolate, unequal, outer acute, inner obtuse.

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

10–300, secund, in wandlike pyramidal, paniculiform arrays, secund to apically recurved, 8–25 × 2.5–10 cm, sometimes proximal branches elongate, repeating pattern.

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).

(obconic) 0.5–2 mm, strigose;

pappi 2–4 mm.

0.9–1.5 mm, sparsely strigose;

pappi 2.5–3.5 mm.

= 18.