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(–6+), erect to ± procumbent, usually simple (usually with single stout leader, sometimes multiple with slender laterals), hispid proximally or throughout.

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 lanceolate or oblanceolate, runcinate or lyrate, 5–30 × 1–4.5 cm, margins pinnately divided to sharply dentate (lobes remote, unequal), apices obtuse or acute, mucronate, faces glabrous or sparsely hispid (hairs yellow; proximal cauline auriculate and clasping).

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

cylindric to turbinate, 5–8 × 3–6 mm.

50–70;

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

20–60;

corollas deep yellow (reddish abaxially), 8–12 mm (hairy).

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.

8–16, lanceolate, 6–7 mm (margins scarious), apices acute, abaxial faces stipitate-glandular and glandular setose (setae black, usually in 2 rows), adaxial glabrous.

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

of 8, linear, tomentulose or stipitate-glandular bractlets 2–4 mm.

10–20, in lax, corymbiform arrays.

10–15(–30+), in 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.

brownish yellow, fusiform, 1.5–2.5 mm, apices narrowed (not beaked), ribs 10 (glabrous or scabrous);

pappi white (fluffy), 3–4 mm (scarcely surpassing phyllaries).

= 8, 16.

= 6.