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).

5–20, erect or ascending (often reddish brown, in loose clumps), ± dichotomously branched distally, glabrous.

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 spatulate or elliptic to ovate, 1–4 × 0.5–1.5 cm, margins coarsely dentate or entire, apices acute, faces glabrous.

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

cylindric, 8–10 × 2–3 mm.

50–70;

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

6–10;

corollas yellow, 6–8 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.

8–10, (blackish green) oblong, 8–10 mm, (margins scarious) apices acute or obtuse, faces glabrous.

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

of 7–8 (blackish green), ovate, glabrous bractlets 1–2 mm.

10–20, in lax, corymbiform arrays.

10–100+, in dense 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.

golden brown, fusiform (subterete or flattened), 4–5 mm, beaked (beaks delicate), ribs 10 (narrow, spiculate-roughened);

pappi white, 4–5 mm.

= 8, 16.

= 14.