Flora of North America species comparison

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

1–3+, erect (angular in cross section, sometimes winged on angles), glabrous or sparsely hairy 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 abruptly narrowed to long, winged petioles, blades broadly ovate, 100–300 × 40–100 mm, relatively thick, margins serrate, apices acute, abaxially glabrous, adaxially scabrous;

distal cauline sessile, blades lanceolate, 50–80 × 15–20 mm, gradually reduced distally, subentire.

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

1–4 mm, sparsely hispido-strigose, bracteoles 2–5, lanceolate, grading into phyllaries distally.

campanulate, 4.5–7.5 mm.

3–4.5 mm.

(5–)7–9;

laminae 3–7 × 1–2 mm.

5–12;

laminae 1.5–1.7 × 0.5 mm.

(8–)10–16;

corollas 4–5 mm, lobes ca. 1–2 mm.

5–15;

corollas 2.8–3 mm, lobes 0.6–1.5 mm.

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

(10–12) in 3–4 series, ovate to linear-ovate, unequal, obtuse.

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.

25–200, secund, in open, lax, secund, pyramidal, paniculiform arrays, branches ascending to recurved, often elongate with recurved ends.

3–4 mm, glabrous or glabrate;

pappi ca. 4 mm.

(sometimes mottled) 1.5–2 mm, strigillose;

pappi 2–3 mm.

= 18, 36, 54.