Flora of North America species comparison

erect (simple, ± scapiform), finely and loosely villous, 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.

basal (persistent);

blades oblanceolate to oblong-oblanceolate, 5–25(–30) × 2–5 mm, strongly reduced distally, margins usually entire, smallest and earliest usually 3-toothed or -lobed apically (lobes or teeth acute), ultimately entire, finely and loosely lanate-villous, 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.

9–13 × 12–23 mm.

(2–)3–4 × 5–12 mm.

30–80;

corollas white or purplish, 8–11 mm, laminae not coiling or reflexing, spreading.

50–100;

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

5–6.5 mm.

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

in 2–3 series (purple or purple-tipped), moderately to densely, finely and loosely villous (hairs sometimes with purple cross walls), minutely glandular.

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

1.

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

3.5–4 mm, 2-nerved, faces finely hirtellous to glabrate;

pappi: outer of setae, inner of 25–35 (whitish to tawny) bristles (often twisted).

(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).

= 36.