Flora of North America species comparison

± branched, branches notably thickened distally.

± branched, branches notably thickened distally.

1–30(–40), erect, unbranched.

(1–)5–20(–30), erect, leafy, ± branched distally.

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.

basal and cauline, entire, glabrous or sparsely to moderately lanuginose to sericeous, usually densely gland-dotted;

basal leaves tightly clustered, blades linear-oblanceolate;

proximal cauline blades linear-oblanceolate;

mid blades linear-oblanceolate to linear, 1.7–2 mm wide;

distal blades linear-oblanceolate to linear.

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

5–18.5 cm, ± hairy, usually densely hairy distally.

10–12 × 12–15 mm.

8–12 × 13–17 mm.

7–14;

corollas 11–17 mm.

7–10;

corollas 10–20 mm.

25–150+;

corollas yellow, 4–4.7 mm.

(40–)80–150+;

corollas yellow, 3.3–4.5 mm.

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

7–12, 5–6.4 mm, margins 0–0.3(–0.4) mm wide, usually scarious, abaxial faces ± hairy.

1–10(–40) per plant, borne singly.

(1–)5–30(–40) per plant (1–5 per stem), borne singly or in paniculiform to corymbiform arrays.

3–4 mm;

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

3–4.1 mm;

pappi of 5–7 lanceolate or obovate to oblanceolate, aristate scales 2.7–4.5 mm.

= 28, 30, 56, 60.