Flora of North America species comparison

1(–6+), erect to ± procumbent, usually simple (usually with single stout leader, sometimes multiple with slender laterals), hispid proximally or throughout.

1–3(–5), erect, branched (branches strict with relatively few secondary branches), sparsely to densely tomentulose.

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).

basal and cauline; petiolate (petiole bases broadened, clasping);

blades elliptic-lanceolate, 10–40 × 2–7 cm, margins deeply pinnately lobed (lobes mostly lanceolate or falcate, usually entire, rarely with 1–2 teeth), apices attentuate, faces tomentose or glabrate, sometimes setose.

cylindric to turbinate, 5–8 × 3–6 mm.

cylindric, 9–17 × 4–7 mm.

20–60;

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

8–25;

corollas yellow, 18–20 mm.

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.

6–10, lanceolate, 12–15 mm (margins yellowish, scarious), apices acute, abaxial faces tomentulose and coarsely green-setose, adaxial glabrous or with fine hairs.

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

of 5–7, lanceolate, green-setose bractlets 2–5 mm.

10–15(–30+), in corymbiform arrays.

15–20+, in congested, corymbiform arrays.

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).

dark brown to olive, subcylindric, 8–9 mm, apices tapered, ribs 10–12 (strong);

pappi whitish or yellowish white, 6–9 mm.

= 6.

= 44, 55, 88.