Flora of North America species comparison

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

1–4, ascending to erect, ± branched proximally and distally (leafy to apices), glabrous.

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 oblanceolate, pinnately lobed (lobes 2–4 pairs, obtuse), ultimate margins entire or dentate;

distal not much reduced (± linear, lobes usually 1–2 near bases, apices acute).

hemispheric, 10–22+ × 6–22+ mm.

7–8.5 × 3–6 mm.

densely bristly.

not bristly.

85–257;

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

outer ligules exserted 2–5 mm.

20–85: corollas medium yellow, 7–11 mm;

outer ligules exserted 3.5–5.5 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.

9–13+ in 2–3 series, (red-tinged) oblong to lanceolate or lance-linear, hyaline margins 0.1–0.2 mm wide, faces glabrous.

0.

of 7–11, ovate to lanceolate bractlets, hyaline margins 0.05–0.2 mm.

± 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.

± prismatic, 1.6–2 mm, ribs extending to apices, ± equal or 5 more prominent than others;

persistent pappi of 11–14, irregular, ± dentate teeth plus 1–2 bristles.

70–100% 3-porate.

70–100% 4-porate.

= 14.

= 28.