Flora of North America species comparison

decumbent to erect.

spreading to ascending or erect.

mostly alternate (sometimes opposite at 1–3 proximal nodes);

blades usually lobed, 12–28 mm overall, lobes 7–15, linear to filiform, pliable (blades mostly not lobed in var. wrightii).

alternate;

blades 10–15 mm overall, lobed, lobes (3–)5–9, linear to filiform.

30–80 mm, glabrous or hirtellous.

1–5+ mm, glabrous.

obconic, 5–7 mm.

obconic to campanulate, 5–6.5 mm.

10–21;

corollas yellow-orange, laminae 4–10 × 1.5–3 mm.

9–12;

corollas white to pale yellow, laminae 3–4 × 1–3.5 mm.

50–100+;

corollas yellow, 2.5–4.5 mm (peripheral ± zygomorphic in some plants).

ca. 25;

corollas pale yellow, 3–4.5 mm.

12–22, margins of outer distinct less than 1/5 their lengths, abaxial faces glabrous or sparsely hirtellous.

8–16, margins of outer distinct less than 1/2 their lengths, abaxial faces glabrous.

of 3–8 deltate to subulate bractlets, lengths less than 1/2 phyllaries.

0, or of 1–2 subulate bractlets, lengths less than 1/2 phyllaries.

2–3.5 mm;

pappi of erose and/or aristate scales 0.7–3.5 mm.

2.5–3 mm;

pappi of 10–15 scales (each comprising 5–9 basally connate bristles) 1–2.5 mm.

= 16.