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, erect, simple or dichotomously branched proximally or distally, hispid proximally, glabrous distally.

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 lyrate,10–20 × 3–4 cm, pinnately lobed (lateral lobes remote, triangular, terminal lobes relatively large, ovate or truncate), apices obtuse, faces hispid (hairs pale, relatively short).

cylindric to turbinate, 5–8 × 3–6 mm.

cylindric, 5–7 × 3–7 mm.

20–60;

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

ca. 30;

corollas yellow, deep purplish red abaxially, 7 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.

10, lanceolate (proximal 1/2 of each becoming indurate, swollen and angular in fruit, enclosing and partially fused to cypsela, margins green), apices bent at right angles (ciliate), abaxial faces basally tomentulose, adaxial glabrous.

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

of 5, lanceolate, glabrous or proximally tomentulose bractlets 3–6 mm.

10–15(–30+), in corymbiform arrays.

borne singly (sessile in axils of branches).

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).

(dimorphic) yellowish, ribs 10 (smooth), outer strongly compressed and triangular, obconic, 2–2.5 mm, strongly constricted proximally, apices truncate, inner obconic, ca. 2.5 mm, tapered proximally, apices constricted;

pappi white (fine, soft), 1.5 mm.

= 6.

= 6.