Flora of North America species comparison

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

usually single, erect, essentially glabrous basally to hispidulo-puberulent in arrays.

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.

basal and proximal cauline tapering to long, winged petioles (quickly reduced distally on stems), blades broadly oblanceolate to obovate, 40–150 × 15–50 mm, margins serrate, finely ciliate, apices acute to obtuse, faces glabrous;

mid and distal cauline sessile, blades linear-elliptic, 5–50 × 2–10 mm, margins entire, finely ciliate.

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

1–3 mm.

campanulate, 4.5–7.5 mm.

narrowly campanulate, 3.5–6.5 mm.

(5–)7–9;

laminae 3–7 × 1–2 mm.

5–9;

laminae 2.5–3.5 × 0.7–1 mm.

(8–)10–16;

corollas 4–5 mm, lobes ca. 1–2 mm.

commonly 6–10;

corollas 4 mm, lobes ca. 1 mm.

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

in 3–5 series, appressed, strongly unequal, outer ovate, inner broadly oblong, obtuse to rounded, glabrous.

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.

15–350 (1–10 per branch), clustered on short divergent lateral branches in elongate and usually narrowly paniculiform arrays, often interrupted proximally, not secund, sometimes with ascending, straight or arching, elongate branches (like main axis).

3–4 mm, glabrous or glabrate;

pappi ca. 4 mm.

(tan) ca. 2.5 mm, glabrous;

pappi 3 mm.

= 18, 36, 54.

= 18.