Flora of North America species comparison

none.

± branched, branches notably thickened distally.

1–10, erect or ± decumbent, leafy, unbranched or branched distally.

1–30(–40), erect, unbranched.

basal and cauline, ± hairy, ± gland-dotted;

basal blades spatulate to oblanceolate, entire or with 2–6 teeth or lobes;

proximal cauline blades narrowly spatulate or oblanceolate to linear-oblanceolate, entire or with 2–6 teeth or lobes;

mid blades oblanceolate to linear-oblanceolate to linear, 0.9–9.5(–16) mm wide, entire or with 1–2 teeth or lobes;

distal blades narrowly oblanceolate to linear-oblanceolate to linear, entire or with 1–2 teeth or lobes.

all basal, new leaves tightly clustered;

blades (midribs usually pronounced) spatulate or oblanceolate to linear-oblanceolate, entire, glabrous or usually sparsely, sometimes moderately to densely, hairy, densely gland-dotted.

8–29 cm, ± hairy.

(0.5–)2–15 cm, ± hairy proximally, almost always densely lanate distally.

5–10 × 7–15 mm.

10–12 × 12–15 mm.

9–25;

corollas 8.2–16.8 mm.

7–14;

corollas 11–17 mm.

50–200+;

corollas yellow, 1.6–3 mm.

25–150+;

corollas yellow, 4–4.7 mm.

8–21, 2.4–5.5 mm, margins 0–0.2 mm wide, not scarious or scarious, abaxial faces ± hairy.

4–8, 6–8.5 mm, margins (0.3–)0.5–1.2 mm wide, usually conspicuously scarious, abaxial faces ± hairy.

8–50(–80) per plant, borne singly or in corymbiform arrays.

1–10(–40) per plant, borne singly.

1.5–2.6 mm;

pappi of 4–8 obovate, often aristate scales 1–2.5 mm.

3–4 mm;

pappi of 5–7 obovate to oblanceolate, aristate scales 3–4(–4.5) mm.