Flora of North America species comparison

1–6, ascending or erect, simple or branched proximally and distally, glaucous or glabrous.

1–4, erect to ascending, usually branched proximally and distally, glabrous (usually glaucous).

proximal linear to obovate, sometimes pinnately lobed, not fleshy, ultimate margins entire or dentate, faces glabrous;

distal reduced (ovate to lanceolate, rarely pinnately lobed, bases clasping).

proximal obovate, usually pinnately lobed (lobes 3–8 pairs, ± equal, bases white-hairy), ± fleshy, ultimate margins dentate, faces glabrous;

distal reduced (sometimes 2–4-dentate near bases).

hemispheric, 10–22+ × 6–22+ mm.

± campanulate, 5–8 × 2–6 mm.

densely bristly.

not bristly.

85–257;

corollas usually pale yellow, sometimes white, 8–12 mm;

outer ligules exserted 2–5 mm.

30–65;

corollas white, 5–8 mm;

outer ligules exserted 1–3 mm.

(25–)40–60+ in 4–6+ series, (midstripes usually reddish or purple) orbiculate to ovate, oblong, lance-oblong, or linear, unequal, hyaline margins 1–2.5 mm wide, faces glabrous.

18–22+ in 2–3 series, oblong or lanceolate to linear, hyaline margins 0.05–0.2 mm wide, faces glabrous.

0.

of 8–12+, ovate to lanceolate bractlets, hyaline margins 0.05–0.3 mm wide.

± prismatic, 1.6–3.2 mm, ribs extending beyond apices, 5 more prominent than others;

persistent pappi of 20–25+, blunt teeth plus 2–6 bristles.

± cylindro-funnelform or weakly prismatic, 1.2–2 mm, ribs extending to apices, ± equal or 5 more prominent than others;

pappi 0 or crenate crowns (0.01–0.1 mm).

70–100% 3-porate.

70–100% 3-porate.

= 14.

= 14.