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 (reddish brown), stout, branched proximally, densely setose and stipitate-glandular (setae 1–3 mm).

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;

blades elliptic or oblanceolate, 10–25 × 2–4 cm, margins pinnately lobed or sharply serrate (lobes lanceolate, acuminate), apices acute, faces villous or coarsely setose, stipitate-glandular (cauline 2–3, bases clasping, margins dentate or serrate).

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

cylindro-campanulate, 14–24 × 5–15 mm.

50–70;

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

16–20;

corollas yellow, 16–21 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.

7–12, lanceolate, 14–20 mm (margins yellowish, not scarious), apices long-acuminate, abaxial faces densely and coarsely setose, adaxial glabrous or with fine, appressed, yellowish hairs.

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

of 3–10, narrowly lanceolate to linear, densely setose and stipitate-glandular bractlets 3–5 mm.

10–20, in lax, corymbiform arrays.

2–20, in loose 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.

reddish brown, fusiform, 5.5–9 mm, apices narrowed (not beaked), ribs 13;

pappi creamy white, 9–13 mm (outer bristles shorter and finer).

= 8, 16.

= 22, 33, 44, 55, 77, 88.