Flora of North America species comparison

erect or decumbent, branched proximally or distally, ± hairy.

erect, branched distally, glabrous or ± hairy.

linear to oblanceolate or oblong, 8–210 × 1–5.5(–15) mm, (± fleshy in coastal forms) margins entire or with 3–5+ teeth, faces glabrous or ± hairy.

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

campanulate to depressed-hemispheric or hemispheric, 5–14 mm.

hemispheric, 5–7 mm.

conic, muricate, glabrous.

± conic, warty, glabrous or sparsely hairy.

6–16;

laminae linear to oblong, 5–18 mm.

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

(persistent or falling with cypselae) 4–16 (in 1–2 series), elliptic to ovate or lanceolate to oblong, hairy.

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

black to gray or silver-gray, linear to narrowly clavate, to 4 mm, glabrous or hairy;

pappi 0, or of 1–7 translucent (rarely opaque), brown (rarely white), linear to subulate, aristate scales.

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

pappi 0.

appendages deltate to sublanceolate.

appendages deltate or broadly ovate.

= 14.