Flora of North America species comparison

erect, densely white strigoso-canescent, eglandular.

erect or ascending, sparsely to moderately strigose to strigillose or hirsuto-strigillose (hairs usually ascending, rarely spreading, 0.1–1.2 mm), eglandular.

mostly basal (persistent, ± erect; leaf bases broadened or not, not thickened and whitish-indurate);

blades linear-oblanceolate to oblanceolate, 20–100 × 2–5(–7) mm, cauline sharply reduced or 0 (restricted to proximal 1/4–1/2), margins entire, faces densely white strigoso-canescent, eglandular.

basal (usually persistent through flowering) and cauline;

basal blades spatulate to broadly or narrowly oblanceolate to linear, (10–)30–150(–170) × 5–15(–21) mm;

cauline usually gradually reduced distally, continuing to near heads, margins entire or shallowly to deeply serrate or crenate, faces glabrous or glabrate to sparsely strigose or strigoso-hirsute, eglandular.

5–7 × 9–16 mm.

(2–)3–4 × 5–12 mm.

20–50(–70);

corollas white to light blue, 7–12 mm, laminae reflexing, sometimes tardily.

50–100;

corollas white, less commonly pinkish or bluish, 4–6 mm, laminae coiling.

3.7–5.6 mm.

1.5–2.5 mm (throats sometimes slightly indurate and inflated).

in 3–4 series, densely hirsute to strigoso-hirsute, minutely glandular.

in 2–4 series, glabrous, strigose, or sparsely hirsute, sometimes minutely glandular.

1(–4).

10–200+ in loosely corymbiform to paniculiform-corymbiform arrays (on distal branches).

(nearly terete,) 2.8–3.5 mm, (8–)10–14-nerved, faces glabrous;

pappi: outer of setae or bristles, inner of 24–36 bristles.

(0.5–)0.9–1.2 mm, 2-nerved, faces sparsely strigose;

pappi: outer crowns of setae or scales, inner 0 (rays) or of 8–15 bristles (disc).

= 18.