Flora of North America species comparison

erect.

erect.

blades linear or lanceolate to oblanceolate;

cauline 20–220 × 2–30 mm, bases not decurrent.

blades linear to oblanceolate, obovate, or oblique-elliptic;

cauline 45–120 × 8–12 mm, bases not decurrent.

5–220 mm;

bracts 0–15, linear to subulate or ovate to oblanceolate, 2–12(–62) mm.

6–35 mm;

bracts (0–)1–3, linear to linear-oblanceolate, 1–2.5 mm.

3–5 × 4–14 mm.

2–2.5(–4) × 4–6 mm.

20–60;

corollas white to lilac, laminae 5–13 mm, tubes 0.5–1.7 mm.

20–35;

corollas white to lilac, laminae 5–9 mm, tubes 0.6–0.9 mm.

65–170;

corollas 1.5–2.6 mm.

80–134;

corollas 2.1–2.9 mm.

in 3–5 series, subulate, linear, lanceolate, or spatulate, subequal, 0–6 merging down peduncles;

outer 1.5–3.8 × 0.4–1.6 mm;

inner 2.1–4 × 0.3–1.5.

in 2–4 series, linear to subulate, subequal, 0–4 merging down peduncle;

outer 1.3–2 × 0.3–0.6 mm;

inner 1.5–3 × 0.3–0.6.

usually in corymbiform, sometimes paniculiform arrays, branches spreading to ascending, most bracts leaflike, 15–120 × 2–18 mm.

in corymbiform arrays, branches spreading to ascending, most bracts leaflike, 10–40 × 3–8 mm.

obovoid, 1–3 × 0.8–2 mm, wings 0.1–0.5 mm wide;

pappi awns 0.4–2 mm (lengths ± 2/3 cypselae).

obovoid, 1.3–2.1 × 0.8–1.3 mm, wings 0.2–0.3 mm wide;

pappi awns 0.3–0.8 mm.

= 18.