Flora of North America species comparison

± branched, branches notably thickened distally.

often highly branched, branches not notably thickened distally.

1–30(–40), erect, unbranched.

1–50, erect, sometimes branched near bases, sometimes densely woolly among proximal leaves.

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.

all basal-proximal (new leaves not tightly clustered);

blades spatulate to oblanceolate to linear-oblanceolate or linear, entire or with 2 teeth or lobes, sparsely to densely hairy, ± gland-dotted.

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

12–40 cm, ± hairy.

10–12 × 12–15 mm.

5–10 × 7–12 mm.

7–14;

corollas 11–17 mm.

12–26;

corollas 7.4–22 mm.

25–150+;

corollas yellow, 4–4.7 mm.

25–180+;

corollas yellow, 2.5–3.5 mm.

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

8–16, 3.8–6.6 mm, margins 0–0.2(–0.4) mm wide, sometimes to often slightly scarious, abaxial faces ± hairy.

1–10(–40) per plant, borne singly.

1–50 per plant, borne singly or in fastigiate arrays.

3–4 mm;

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

2–3 mm;

pappi of 5–7 obovate to oblanceolate, aristate scales 1.6–2.3 mm.