Flora of North America species comparison

erect, sometimes branched, hirsute (hairs unequal), ± minutely glandular.

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; petioles prominently ciliate, hairs spreading, thick-based);

blades narrowly oblanceolate to spatulate, (20–)30–80 × 2–4(–12) mm, cauline sometimes continuing distally to about midstem, margins entire, usually ciliate, sometimes coarsely so, faces sparsely to densely hirsute, sometimes minutely glandular.

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.

5–9 × 9–20 mm.

(2–)3–4 × 5–12 mm.

15–45 or 0;

corollas usually pink to bluish purple, sometimes white, 5–14 mm, laminae coiling.

50–100;

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

(3.5–)4–5.5 mm.

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

in 2–3 series, sparsely to densely hirsuto-villous to hirsute, minutely glandular.

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

1(–3) (from branches at or proximal to midstem).

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

2.5–3 mm, 2-nerved, faces densely strigoso-sericeous (obscured);

pappi: outer of setae, inner of 20–30 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).