Flora of North America species comparison

0 or 1 (erect, 0–5 cm).

0.

mostly erect, sometimes prostrate;

petioles not purplish, margins glabrous or ciliate;

blades usually oblanceolate to spatulate, rarely linear, 1–25 cm, margins entire or lobed;

lobes 2–3 pairs, linear to spatulate, spreading to antrorse, lobules mostly 0, glabrous or densely hairy.

erect to ascending;

petioles often purplish;

blades linear to linear-elliptic, (7–)10–30(–36) cm, margins usually lobed to pinnatifid, rarely toothed or entire, lobes (4–)7–9(–11) pairs, linear to lanceolate, mostly retrorse, sometimes spreading, lobules often present, faces sparsely villous to tomentose.

elongating after flowering, 3–60 cm in fruit, glabrous or glabrate, or basally puberulent and apically hairy to tomentose, sometimes stipitate-glandular.

elongating after flowering, 15–65(–94) cm in fruit, ± glabrate, or apically villous to tomentose, eglandular.

cylindric to hemispheric, 1–2 cm in fruit.

cylindric to obconic or campanulate, 4–6 cm in fruit.

epaleate.

epaleate.

5–100(–300);

corollas yellow, tubes 1–5 mm, ligules 2–15 × 1–3 mm;

anthers 1–4 mm.

10–100;

corollas yellow, tubes 8–20 mm, ligules 6–15 × 1.5–2.5 mm;

anthers 2–5 mm.

in 2–3 series, green or medially rosy purple, sometimes purple-black spotted or tipped, subequal to unequal, margins glabrous or ciliate, faces usually puberulent to villous, mostly stipitate-glandular, sometimes glabrous;

outer erect or spreading, adaxially usually villous to lanate, sometimes glabrous;

inner erect, ± elongating after flowering.

in 3–5 series, medially rosy purple or all green, lacking darker spots or midstripes, margins ciliate to tomentose, faces glabrous or villous, eglandular;

outer erect to spreading, adaxially glabrous or tomentose;

inner erect, often precociously elongating and much surpassing outer.

7–16 mm, bodies mostly fusiform to obconic, sometimes tumid, 2–5(–10) mm, beaks 5–11 mm, lengths 1–4 times bodies, ribs 0 or alate, straight to strongly undulate, uniform or diminishing proximally;

pappus bristles in 2–3 series, 4–9 mm.

(15–)20–31 mm, bodies narrowly obconic, 5–7 mm, beaks (10–)15–25 mm, lengths mostly 3–4 times bodies;

ribs strongly ridged, straight, often minutely cinereous-pannose;

pappus bristles in 4–6 series, (11–)15–20 mm.

= 18.