Flora of North America species comparison

spreading to ascending or erect.

erect (branched from bases).

alternate;

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

mostly opposite;

blades not lobed, linear to acerose, 10–18 mm.

1–5+ mm, glabrous.

0–10 mm, puberulent or glabrous.

obconic to campanulate, 5–6.5 mm.

campanulate to cylindric, 5–7 mm.

9–12;

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

7–8;

corollas lemon-yellow, laminae 5–6 × 2–3 mm.

ca. 25;

corollas pale yellow, 3–4.5 mm.

18–25+;

corollas pale yellow, 3–4 mm.

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

ca. 13, margins of outer distinct less than 1/6 their lengths, abaxial faces puberulent or glabrous.

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

of 5 lance-linear bractlets, lengths 1/2+ phyllaries.

2.5–3 mm;

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

3–3.5 mm;

pappi of ca. 20 scales (each a fascicle of 3–5 bristles), 3–4 mm.

= 16.

= 16, 24.