Flora of North America species comparison

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

1–20(–50+), stout, finely puberulent or scabrous-puberulent at least distally.

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 absent at flowering;

cauline sessile to short-petiolate;

blades usually lanceolate-elliptic or ovate, sometimes linear-lanceolate, 30–150 × 5–30 mm, thick and firm, margins entire or few toothed, somewhat to much reduced distally, abaxial faces sometimes resinous and shiny, glabrous or strigillose (hairs mostly 0.1–1.4 mm), adaxial glabrous or scabrous.

2–3 mm, glabrous or sparsely hairy.

mostly 2–15 mm, bracteolate, sparsely to densely short hispid-strigose.

3–7 mm.

campanulate, 4.5–7.5 mm.

8–17;

laminae 5–6.2 × 0.4–0.6 mm.

(5–)7–9;

laminae 3–7 × 1–2 mm.

10–22;

corollas 3–3.2 mm, lobes 0.5–1.2 mm.

(8–)10–16;

corollas 4–5 mm, lobes ca. 1–2 mm.

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

in 3–4 series, unequal, linear-lanceolate, acute to attenuate, ± squarrose-tipped, glabrous or moderately strigose, sparsely to moderately stipitate-glandular, sometimes viscid.

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.

10–190+ in paniculiform (rarely racemiform) arrays, usually elongate, usually leafy-bracteate, bracts similar to distal leaves but reduced;

branches stiffly ascending, not secund, sometimes elongate.

(obconic) 1.1–1.5 mm, moderately strigose;

pappi 3.8–4 mm (slightly clavate).

3–4 mm, glabrous or glabrate;

pappi ca. 4 mm.

= 18, 36, 54.