Flora of North America species comparison

0.

usually 0, rarely weakly developed.

erect to decumbent;

petioles purplish, petiole margins ciliate to hairy;

blades 7–38 cm, linear-lanceolate to oblanceolate, margins entire or laciniately pinnatifid, lobes 2–4 pairs, linear to lanceolate, spreading to antrorse, lobules usually inconspicuous to subequaling lobes, rarely lacking, faces glabrous and ± glaucous or sparsely villous.

erect to ascending;

petioles often purplish, margins ciliate to tomentose;

blades usually linear to oblanceolate, rarely spatulate, 10–40(–50) cm, margins usually dentate to lobed, or laciniately pinnatifid, rarely subentire, lobes 3–5 pairs, opposite to irregular, linear to lanceolate, usually antrorse, sometimes spreading;

lobules often present, faces ± villous to canescent.

± elongating after flowering, 8–40(–80) cm, glabrate, or apically villous to lanate, eglandular.

elongating after flowering, (15–)25–60(–96) cm in fruit, ± glabrate, or apically villous to tomentose, eglandular, sometimes bracteate.

cylindric to obconic or campanulate, 2.5–3 cm at maturity.

campanulate to hemispheric, 2–5 cm in fruit.

epaleate.

epaleate.

15–100;

corollas usually orange, sometimes yellow, pink, red, purple, or white, tubes (4–)7–9 mm, ligules 4–12 × 1–3 mm;

anthers 2–5 mm.

40–500;

corollas yellow, tubes 4–7(–10) mm, ligules 3–7 × ca. 1 mm;

anthers 1–3 mm.

in 2–3 series, green or medially rosy purple, often with purple-black spots, blotches, and/or midstripes, or nearly all black, subequal to unequal, margins ciliate, faces glabrous or villous, eglandular;

outer mostly spreading, adaxially glabrous or villous;

inner erect, elongating after flowering.

in 4–5 series, green or medially rosy purple and/or spotted, subequal to unequal, margins occasionally dentate, ciliate or lanate, sometimes glabrous, faces glabrous or hairy, eglandular;

outer subequal to or surpassing inner at flowering, spreading, adaxially tomentose;

inner erect, greatly elongating after flowering.

± dimorphic, 8–18 mm, bodies cylindric to fusiform or obconic, 6–9(–11) mm, abruptly or gradually tapered to slender beaks (2–)5–10 mm, lengths mostly equaling bodies;

ribs strongly ridged, straight, glabrous or scabrous;

pappi in 2–3 series, 9–15 mm.

9–28 mm, bodies fusiform, 3–7 mm, beaks 9–21 mm, lengths mostly 3–4 times bodies;

ribs ridged to subalate, rarely nerviform, straight, ± glabrous;

pappus bristles in 2–3 series, 7–15 mm.

= 18, 36.

= 18.