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).

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

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).

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

narrowly cylindric, 10–16 × 3–5 mm.

50–70;

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

7–12;

corollas yellow, 14–30 mm.

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.

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

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

10–20, in lax, corymbiform arrays.

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

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

pappi dusky white, 7–10 mm.

= 8, 16.

= 33, 44, 55, 88.