Flora of North America species comparison

± branched, branches notably thickened distally.

± branched, branches not notably thickened distally.

1–30(–40), erect, unbranched.

1–20, erect or ± decumbent, sometimes branched near bases, usually densely woolly or long-hairy 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 linear-oblanceolate, oblanceolate, or spatulate, entire or basal and proximal with 2(–4) teeth or lobes, moderately to densely woolly, usually densely gland-dotted.

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

20–50 cm, moderately to densely hairy.

10–12 × 12–15 mm.

8–15 × 12–20 mm.

7–14;

corollas 11–17 mm.

12–24;

corollas 14–20 mm.

25–150+;

corollas yellow, 4–4.7 mm.

100–250+;

corollas yellow proximally, yellow to purplish distally, 3.5–3.8 mm.

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

12–16, 5.2–7.8(–10) mm, margins 0–0.2 mm wide, sometimes slightly scarious, abaxial faces ± hairy.

1–10(–40) per plant, borne singly.

1–20 per plant, borne singly.

3–4 mm;

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

2.6–3.4 mm;

pappi of 6–7 lanceolate to obovate or oblanceolate, often aristate scales 3–4 mm.

= 90.