Flora of North America species comparison

1, branched proximally and distally, usually tomentose, sometimes glabrous.

1–5, erect or ascending, branched mostly distally, glabrous.

proximal obovate to narrowly spatulate, sometimes pinnately lobed (lobes 1–2+ pairs, subequal, apices obtuse), sometimes ± fleshy, margins usually obtuse-lobed, sometimes entire;

distal not notably reduced (similar to others).

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).

10–14 × 4–8+ mm.

narrowly campanulate, 4–8+ × 2–4+ mm.

not bristly.

not bristly.

47–99;

corollas medium yellow, 11–20 mm;

outer ligules exserted 5–10 mm.

(19–67);

corollas pale yellow, 4–7.4 mm;

outer ligules exserted 1–3 mm.

16–30 in 2–3 series, (red-tinged) lanceolate or oblong to linear, hyaline margins 0.05–0.1 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.

of 5–16+, ovate to lanceolate bractlets, hyaline margins 0.05–0.2 mm.

of 5–12, lance-deltate to lanceolate bractlets, hyaline margins 0.05–0.2 mm.

usually cylindro-fusiform, sometimes weakly prismatic, 1.5–2.2 mm, ribs extending to apices, ± equal;

persistent pappi 0.

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. 2n = 14.

= 14.