Flora of North America species comparison

0 or 1 (erect, 0–5 cm).

0 or 1 (internodes to 1/2 times lengths of subtending leaves).

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 spreading;

blades (2–)5–15(–24) cm × (1.5–)2–10(–16) mm, mostly toothed to lobed, rarely entire, teeth or lobes (2–)3–5 pairs, faces usually densely, ± uniformly hairy, rarely glabrous.

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

6–60 cm, lengths mostly 1.5–4 times leaves at flowering, 2–5 times length of leaves in fruit, glabrous or glabrate, or apically hairy to tomentose.

cylindric to hemispheric, 1–2 cm in fruit.

epaleate.

5–100(–300);

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

anthers 1–4 mm.

20–100(–300);

corollas much surpassing phyllaries at flowering, tubes 2–5 mm, ligules 10–15 × 2–3 mm;

anthers 2–4 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.

green or medially rosy purple, sometimes spotted, margins glabrous or ciliate, faces mostly hairy, occasionally glabrous or villous, stipitate-glandular, with translucent, yellowish or purple-septate, often purple-tipped hairs or eglandular with whitish-opaque hairs;

outer erect to spreading, adaxially glabrous or pubescent and eglandular.

(7–)10–18 mm wide (flowering).

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.

outermost strongly differing from inner, highly variable as to color, shape, ornamentation, and pubescence, ribs flattened to alate, or 0, straight to strongly undulate, often strongly diminishing proximally.

= 18.