Flora of North America species comparison

(often purplish) erect or decumbent, sparsely strigillose (basal cells inclined, hairs even-width), eglandular.

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

basal (often withering by flowering) and cauline;

basal blades (3-nerved) linear to narrowly oblanceolate, 90–170 × 3–7 mm;

cauline gradually reduced distally, ending proximal to heads, margins entire, faces strigoso-hirsute, 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.

6–8.5 × (12–)14–20 mm.

(2–)3–4 × 5–12 mm.

21–36;

corollas 7–15(–19) mm, laminae white to pinkish, not coiling or reflexing.

50–100;

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

3.5–4.5 mm.

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

in 2–3(–4) series (narrowly oblanceolate to lanceolate, acute-acuminate), sparsely to moderately hirsute to villous, eglandular.

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

1–3.

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

(1.8–)2–3.2 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 15–22 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).