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).

1–3, erect (often reddish), stout, mostly simple, sparsely to densely tomentose, often stipitate-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).

basal and cauline;

petiolate (at least basal);

blades elliptic, runcinate, 8–20 × 2–5 cm, margins pinnately lobed (lobes broadly lanceolate, coarsely dentate, midribs often reddish), apices acute, faces sparsely to densely tomentose, stipitate-glandular.

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

cylindric, 11–21 × 5–15 mm.

50–70;

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

11–40;

corollas yellow, 16–20 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.

10–14, lanceolate, 10–14 mm (margins yellowish), apices acute, abaxial faces glabrous or ± tomentose, sometimes setose and stipitate-glandular, adaxial glabrous or with fine hairs.

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

of 8–10, deltate or lanceolate, tomentose bractlets 3–8 mm.

10–20, in lax, corymbiform arrays.

2–22 (1–3 per branch), in cymiform 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.

dark or pale brown to yellowish, fusiform, 6–11 mm, apices ± tapered, ribs 10–13;

pappi whitish, 6–13 mm.

= 8, 16.

= 22, 33, 44, 55.