Flora of North America species comparison

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

usually 1, erect or ± prostrate, usually ± branched proximally (often forming mats, usually leafy throughout), 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 obovate to spatulate, usually pinnately lobed (lobes 1–3+ pairs, nearly equal, apices obtuse), usually fleshy, ultimate margins entire, faces glabrous;

distal not reduced (similar to others).

hemispheric, 10–22+ × 6–22+ mm.

± campanulate, 6–8 × 2–6+ mm.

densely bristly.

glabrous.

85–257;

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

outer ligules exserted 2–5 mm.

18–76;

corollas medium yellow, 4–8 mm;

outer ligules exserted 1–4 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.

13–22+ in 2–3 series, (often red-tinged) oblong to lanceolate, hyaline margins 0.05–0.2 mm wide, faces glabrous.

0.

of 8–13+, lance-deltate to lanceolate bractlets (sometimes intergrading with phyllaries), hyaline margins 0.05–0.2 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.

± prismatic, 1.2–1.5 mm, ribs extending to apices, 5 more prominent than others;

persistent pappi 0.

70–100% 3-porate.

70–100% 3-porate.

= 14.

= 14.