Flora of North America species comparison

decumbent to erect.

erect (branched from bases).

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 15–40 mm overall, lobed, lobes 5–13, linear.

30–80 mm, glabrous or hirtellous.

10–70 mm, glabrous or puberulent.

obconic, 5–7 mm.

obconic to campanulate, 5–6 mm.

10–21;

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

8–12;

corollas bright yellow, laminae 4–6 × 2–3 mm.

50–100+;

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

30–45;

corollas yellow, 3 mm.

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

12–15, margins of outer distinct almost to bases, abaxial faces glabrous or puberulent.

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.

3 mm;

pappi either of erose scales 0.3–0.6 mm, or of 3–5-aristate scales 2–3 mm.