Flora of North America species comparison

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

erect or sprawling, branched distally, glabrous.

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, 30–100 × 2–4(-6+) mm, (bases often connate and sheathing, apices blunt) margins entire, faces glabrous.

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

hemispheric or campanulate, 5–7 mm.

conic, muricate, glabrous.

conic, papillate, glabrous.

6–16;

laminae linear to oblong, 5–18 mm.

6–13; (corollas pale yellow) laminae ovate-elliptic, (0–)0.5–2 mm.

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

5–10, ± lanceolate, hairy.

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.

grayish, somewhat flattened, ± linear, to 4 mm, hairy;

pappi of 5–10 subulate to lanceolate, often fimbriate, laciniate, or aristate scales.

appendages deltate to sublanceolate.

appendages oblong or obovate.

= 10.