Flora of North America species comparison

usually prostrate or decumbent, rarely erect, branched proximally, glabrous or hairy at nodes and distally.

erect, usually branched proximally, sometimes distally, villous.

linear to oblanceolate, 10–90 × 2–12 mm, (fleshy) margins entire or lobed, faces glabrous.

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

hemispheric, 4–7 mm.

campanulate to obconic, 5–7 mm.

conic, muricate, glabrous.

subulate, papillate, glabrous.

7–12; (corollas light to golden yellow) laminae oblong, 1–3 mm.

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

lobes 5.

6–14, lanceolate to ovate, hairy (especially at margins and midribs).

5, obovate to ovate, slightly hairy.

showy.

gray, linear to narrowly clavate, (2–)2.5–3 mm, ± hairy;

pappi usually of 4–6(–12) brown, lanceolate or subulate, aristate scales plus 4–5+ shorter, laciniate scales, rarely 0.

black, ± linear, to 3 mm, hairy;

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

appendages ± oblong, obtuse (style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs).

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

= 8.

= 8.