Flora of North America species comparison

erect (branched from bases).

erect.

mostly opposite;

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

all or mostly alternate;

blades not lobed, linear to filiform, 10–15 × 0.3–1 mm, margins usually entire, sometimes 3-fid distally.

0–10 mm, puberulent or glabrous.

10–30 mm, tomentose.

campanulate to cylindric, 5–7 mm.

campanulate, 5–7 mm.

7–8;

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

12–13;

corollas golden yellow, laminae 6–8 × 3–4 mm.

18–25+;

corollas pale yellow, 3–4 mm.

ca. 30;

corollas yellow, 4.5–5 mm.

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

12–13, margins of outer distinct less than 1/4 their lengths, abaxial faces tomentose.

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

of 3–4 linear bractlets, lengths 1/2+ phyllaries.

3–3.5 mm;

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

3–4 mm;

pappi of 10–11 subequal scales 4–5 mm (each 3–5-aristate).

= 16, 24.

= 16.