Flora of North America species comparison

± branched, branches notably thickened distally.

± branched, branches not notably thickened distally.

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

1–20, erect or ± decumbent, sometimes branched near bases, usually densely woolly or long-hairy among proximal leaves.

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.

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.

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

20–50 cm, moderately to densely hairy.

8–12 × 13–17 mm.

8–15 × 12–20 mm.

7–10;

corollas 10–20 mm.

12–24;

corollas 14–20 mm.

(40–)80–150+;

corollas yellow, 3.3–4.5 mm.

100–250+;

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

7–12, 5–6.4 mm, margins 0–0.3(–0.4) mm wide, usually 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–)5–30(–40) per plant (1–5 per stem), borne singly or in paniculiform to corymbiform arrays.

1–20 per plant, borne singly.

3–4.1 mm;

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

2.6–3.4 mm;

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

= 28, 30, 56, 60.

= 90.