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

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;

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).

cylindric to turbinate, 5–8 × 3–6 mm.

cylindro-campanulate, 6–9 × 7–8 mm.

20–60;

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

30–70;

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

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.

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

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

10–15(–30+), in corymbiform arrays.

5–20(–100+), in paniculiform or 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 reddish or purplish brown, fusiform, 3–4 mm, apices constricted (not beaked), ribs 10 (rounded, minutely spiculate);

pappi white (fine, soft), 4–5 mm.

= 6.

= 8.