Flora of North America species comparison

(1–)3–8, ± decumbent or spreading-ascending, branched proximally and distally, glaucous or glabrous.

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

proximal elliptic to oblong-oblanceolate, sometimes pinnately lobed (lobes 2–4+ pairs, oblong to triangular, unequal, apices acute), not fleshy, ultimate margins usually dentate, faces glabrous;

distal reduced (narrowly triangular to linear or filiform, margins dentate or entire).

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).

± campanulate, 7–10 × 5–6+ mm.

narrowly campanulate, 4–8+ × 2–4+ mm.

not bristly.

not bristly.

16–88;

corollas yellow (usually with red or purplish abaxial stripes), 6–14 mm;

outer ligules exserted 5–8 mm.

(19–67);

corollas pale yellow, 4–7.4 mm;

outer ligules exserted 1–3 mm.

13–25+ in 2–3 series, lance-oblong or lanceolate to lance-linear, subequal, hyaline margins 0.05–0.3 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 5–12, ovate to lanceolate bractlets, hyaline margins 0.05–0.2 mm wide.

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

± cylindric, 1.8–2.4 mm (distal 0.3 mm slightly expanded, cupped, smooth), ribs not extending to apices, ± equal;

persistent pappi of 12–15, ± deltate teeth (often hidden within cups at apices of cypselae) plus 1–2 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. 2n = 14.

= 14.