Flora of North America species comparison

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

erect, usually branched proximally, sometimes distally, villous.

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 to linear-oblong, 10–80 × 1–5.5 mm, margins usually entire, sometimes 1–2-toothed (teeth to 2 mm), faces hairy.

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

campanulate to obconic, 5–7 mm.

conic, muricate, glabrous.

subulate, papillate, glabrous.

6–16;

laminae linear to oblong, 5–18 mm.

5–10; (corollas yellow or white) laminae broadly elliptic to oblong, 3–5 mm.

lobes 5.

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

5, obovate to ovate, slightly hairy.

showy.

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, ± linear, to 3 mm, hairy;

pappi 0, or of 2–4 brown or white, ovate or lanceolate, aristate scales.

appendages deltate to sublanceolate.

appendages deltate (with 1–4 wartlike glands; style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs).

= 8.