Flora of North America species comparison

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

erect, branched distally, glabrous or sparsely 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+ mm (simple blades or single lobes), margins entire or pinnately lobed, faces glabrous.

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

hemispheric or obconic, 6–10 mm.

deltate to sublanceolate.

linear to ± ovate.

conic, muricate, glabrous.

dome-shaped or obconic, densely hairy.

6–16;

laminae linear to oblong, 5–18 mm.

6–13;

laminae oblong to oval, 5–10 mm.

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

12–18 (connate 1/4–1/2 their lengths), ± lanceolate, puberulent to glabrate.

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 or gray (reflective), clavate, to 1.5 mm, glabrous;

pappi 0.

= 12.