Flora of North America species comparison

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

erect, branched distally, glabrous or ± hairy.

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

linear, 10–80 × 1–2(–3+) mm, margins entire, faces glabrous or sparsely hairy.

hemispheric to obconic, 4–7 mm.

hemispheric, 5–7 mm.

conic, smooth, muricate, or pitted, hairy.

± conic, warty, glabrous or sparsely hairy.

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

6–10; (corollas lemon- or golden yellow) laminae narrowly oblong, 6–7 mm.

6–14, lanceolate to ovate, hairy.

8–14, ± deltate (distinct tips ± deltate), glabrous but for apices.

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.

black, strongly flattened, obovoid, 2–3 mm, margins ciliate (hairs white or stramineous, stiff, blunt, curved), faces glabrous or scabrous;

pappi 0.

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

appendages deltate or broadly ovate.

= 8, 10.

= 14.