Flora of North America species comparison

1(–6+), erect to ± procumbent, usually simple (usually with single stout leader, sometimes multiple with slender laterals), hispid proximally or throughout.

1, erect, branched distally, setulose and sometimes glandular proximally.

basal and cauline;

petiolate (petiole bases clasping);

blades lanceolate or oblanceolate, runcinate or lyrate, 5–30 × 1–4.5 cm, margins pinnately divided to sharply dentate (lobes remote, unequal), apices obtuse or acute, mucronate, faces glabrous or sparsely hispid (hairs yellow; proximal cauline auriculate and clasping).

mostly cauline;

petiolate or sessile;

blades broadly oblanceolate to elliptic, 15–30 × 4–6 cm, margins closely toothed (teeth corneous apically and sometimes along margins), apices acute, faces scabrous, ± setulose and stipitate-glandular; (cauline sessile, ovate or elliptic, bases auriculate).

cylindric to turbinate, 5–8 × 3–6 mm.

cylindro-campanulate, 10–15 × 6–12 mm.

20–60;

corollas deep yellow (reddish abaxially), 8–12 mm (hairy).

50–90;

corollas yellow, 15–18 mm (sparsely tomentulose).

8–16, lanceolate, 6–7 mm (margins scarious), apices acute, abaxial faces stipitate-glandular and glandular setose (setae black, usually in 2 rows), adaxial glabrous.

12–15, lanceolate, 9–10 mm, (bases strongly thickened, margins green), apices (dark) acute, abaxial faces tomentulose, sometimes with setae, adaxial glabrous.

of 8, linear, tomentulose or stipitate-glandular bractlets 2–4 mm.

of 10–12, lanceolate to linear, sparsely tomentulous bractlets 3–5 mm.

10–15(–30+), in corymbiform arrays.

1–8, borne singly or (on racemiform branches) in compound, paniculiform or corymbiform arrays.

brownish yellow, fusiform, 1.5–2.5 mm, apices narrowed (not beaked), ribs 10 (glabrous or scabrous);

pappi white (fluffy), 3–4 mm (scarcely surpassing phyllaries).

brown, fusiform, 5–6 mm, apices narrowed (not beaked), ribs 15–20;

pappi white (soft), 5–8 mm.

= 6.

= 8.