Flora of North America species comparison

1, erect (fistulose), branched distally or from bases, tomentulose and/or hispid.

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

basal and cauline; petiolate;

blades lanceolate to oblanceolate, often coarsely runcinate, 5–15 × 1–4 cm, margins entire, denticulate, or dentate to pinnately lobed (lobes remote, coarse, unequal), apices acute to acuminate, abaxial faces glabrous or tomentose, adaxial glabrous (proximal cauline sessile, bases auriculate, distal usually linear, entire).

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, 6–9 × 7–8 mm.

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

30–70;

corollas yellow (without red on ligules), 10–13 mm.

50–90;

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

12–15, lanceolate, 5–9 mm, (bases becoming keeled and thickened, margins scarious), apices acute to attenuate (white-ciliate, tomentulose), abaxial faces tomentose to hispidulous, 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 ± 12, subulate, tomentose and hispidulous bractlets 2–5 mm (often becoming scarious).

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

5–20(–100+), in paniculiform or corymbiform arrays.

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

dark reddish or purplish brown, fusiform, 3–4 mm, apices constricted (not beaked), ribs 10 (rounded, minutely spiculate);

pappi white (fine, soft), 4–5 mm.

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

pappi white (soft), 5–8 mm.

= 8.

= 8.