Flora of North America species comparison

1, erect to arcuate or decumbent (green or purple proximally), usually much branched, glabrate to hispid and/or tomentose, sometimes sparsely setose (setae black).

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

basal and cauline;

petiolate (bases clasping);

blades oblanceolate to ovate, often runcinate, 10–35 × 2–8 cm, margins pinnately lobed to toothed (terminal lobes relatively large), apices obtuse or acute, faces usually hirsute (hairs sometimes only on veins) or glabrous (cauline sessile, bases auriculate, clasping, margins ± toothed).

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).

cylindro-campanulate (becoming turbinate or urceolate in fruit), 5–14 × 5–6 mm.

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

50–70;

corollas yellow (reddish abaxially), 6–15 mm.

50–90;

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

7–16, (reflexed at maturity) lanceolate, 10–12 mm, (margins green to yellowish), apices obtuse or acute (ciliate), abaxial faces tomentose and often stipitate-glandular, adaxial with fine, appressed hairs.

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

of 5–12, ovate to linear-lanceolate, glabrous bractlets 3–4 mm (reflexed in fruit, scarious).

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

10–20, in lax, corymbiform arrays.

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

(monomorphic or dimorphic) pale brown or yellowish, fusiform, 4–9 mm, outer wider with apices attenuate (not beaked), inner gradually tapered, beaked (beaks 2–5 mm, ± equal to bodies), ribs 10 (narrow);

pappi white (fine, soft), 3–6 mm.

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

pappi white (soft), 5–8 mm.

= 8, 16.

= 8.