Flora of North America species comparison

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

1–5, erect or ascending, branched mostly distally, 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 to lance-linear, sometimes pinnately lobed, not fleshy, ultimate margins usually dentate, faces glabrous;

distal reduced (margins 2–4-dentate near bases or entire).

hemispheric, 10–22+ × 6–22+ mm.

narrowly campanulate, 4–8+ × 2–4+ mm.

densely bristly.

not bristly.

85–257;

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

outer ligules exserted 2–5 mm.

(19–67);

corollas pale yellow, 4–7.4 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.

8–15+ in 2+ series, lance-linear to linear, ± equal, hyaline margins 0.05–0.3 mm wide, abaxial faces glabrous.

0.

of 5–12, lance-deltate 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.

fusiform or prismatic, 1.2–1.8 mm, ribs extending to apices, 5 more prominent than others;

persistent pappi of 15–24+, needlelike teeth plus 1 bristle.

70–100% 3-porate.

70–100% 3-porate, mean 25 µm.

= 14.

= 14.