Flora of North America species comparison

erect, branched distally, glabrous or slightly hairy.

erect, branched distally, usually glandular-puberulent (often with longer non-glandular hairs as well).

linear or subulate, 40–150 × 2–3+ mm, margins entire, faces glabrous.

linear, 15–60 × 0.5–5 mm, (not fleshy) margins entire or 1–2-pinnately lobed, faces hairy.

hemispheric, 5–10 mm.

hemispheric to obconic, 4–7 mm.

± conic, papillate, glabrous or sparsely hairy.

conic, smooth, muricate, or pitted, hairy.

7–15; (corollas yellow) laminae oblong, 4–14 mm.

6–15; (corollas yellow) laminae linear-oblong or oblong, 3–10 mm.

10–14, ± lanceolate (distinct tips ± deltate), glabrous but for apices.

6–14, lanceolate to ovate, hairy.

gray, clavate or obovoid, 2–3.5 mm, margins not ciliate, faces glabrous, or hairy and papillate (papillae rusty or yellowish, wartlike);

pappi 0.

black, linear to narrowly clavate, to 2.5 mm, hairy;

pappi usually of 5–6+ lanceolate to ovate scales (1–5 uniaristate), sometimes of 4–5 subulate, aristate scales, or 0.

appendages deltate or broadly ovate.

appendages elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs).

= 8, 10.