Flora of North America species comparison

1–10(–20+), erect or ascending, glabrous throughout or hairy in arrays.

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

rosettes present at flowering;

basal and proximal cauline tapering to long, winged petioles sheathing stems or nearly so, blades narrowly ovate to oblanceolate, 100–400 × 10–60 mm, thick or fleshy, entire, acute, glabrous;

mid to distal cauline usually numerous, sessile, blades lanceolate, 40–60 × 5–10 mm, reduced distally, thick or fleshy, bases sometimes subclasping, 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 mm, glabrous or sparsely hairy.

1.5–6 mm, glabrous or sparsely strigillose;

bracteoles 0–2, linear.

3–7 mm.

narrowly campanulate, 3–4 mm.

8–17;

laminae 5–6.2 × 0.4–0.6 mm.

7–12;

laminae 2–2.5 × 0.2–0.5 mm.

10–22;

corollas 3–3.2 mm, lobes 0.5–1.2 mm.

8–15;

corollas 2.5–3 mm, lobes 0.5–0.8 mm.

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

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

20–500, secund, in paniculiform arrays, secund-pyramidal to broadly club-shaped, sometimes leafy proximally, at least proximal branches spreading-recurved, branches and peduncles bracteolate, bracteoles reduced distally.

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) 1.1–1.5 mm, moderately strigose;

pappi 3.8–4 mm (slightly clavate).

0.9–1.5 mm, sparsely strigose;

pappi 2.5–3.5 mm.

= 18.