Flora of North America species comparison

0 or 1 (erect, 0–5 cm).

0 or 1 (internodes much shorter than 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 (1–)3–15(–23) cm × (0.5–)2–10(–16) mm, mostly toothed, rarely lobed, lobes or teeth in 2–3 pairs, faces glabrous or densely, ± uniformly hairy.

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

6–53 cm, lengths mostly (0.5–)1.5–4.5 times leaves at flowering, (1.5–)2–5 times leaves in fruit, glabrous or glabrate, or apically puberulent to villous.

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.

(5–)20–50(–100);

corollas ± equaling phyllaries at flowering, tubes 1–4 mm, ligules 2–6 × 1–2 mm;

anthers 1–1.5 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.

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

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

2–10(–12) mm wide at 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 in color, shape, ornamentation, and pubescence;

ribs flattened to alate, or 0, straight to strongly undulate, not diminishing proximally.

= 18, 36.