Flora of North America species comparison

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

1–2, erect, branched (proximal branches elongate, branched distally), ± tomentose-canescent.

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).

basal and cauline; petiolate (petiole bases clasping);

blades elliptic-lanceolate, 10–40 × 2–9 cm, margins pinnately lobed (lobes remote or close, entire or dentate), apices acute or acuminate, faces densely or sparsely gray-tomentose.

cylindro-campanulate, 6–9 × 7–8 mm.

narrowly cylindric, 10–16 × 3–5 mm.

30–70;

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

7–12;

corollas yellow, 14–30 mm.

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.

7–10, (medially green) lanceolate, 10–13 mm (margins scarious), apices acute, abaxial faces ± tomentulose, sometimes with greenish eglandular setae, adaxial with fine hairs.

of ± 12, subulate, tomentose and hispidulous bractlets 2–5 mm (often becoming scarious).

of 6–8, narrowly triangular, tomentulose bractlets 2–4 mm.

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

(10–)20–60, in ± flat-topped, compound, corymbiform or paniculiform 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.

yellow or golden brown, subcylindric, 6–9 mm, tapered distally, ribs 10–12 (smooth);

pappi dusky white, 7–10 mm.

= 8.

= 33, 44, 55, 88.