Flora of North America species comparison

erect, branched proximally, glabrous proximally, ± hairy distally.

erect, branched distally, usually glandular-puberulent (often with longer non-glandular hairs as well).

linear, 10–60 × 1–2+ mm (simple blades or single lobes), margins entire or with 1–3 pairs of linear lobes, faces glabrous or sparsely hairy.

linear, 15–60 × 0.5–5 mm, (not fleshy) margins entire or 1–2-pinnately lobed, faces hairy.

hemispheric or obconic, 4–7.5 mm.

hemispheric to obconic, 4–7 mm.

dome-shaped, muricate, hairy.

conic, smooth, muricate, or pitted, hairy.

6–13;

laminae oblong to oval, 5–7 mm.

6–15; (corollas yellow) laminae linear-oblong or oblong, 3–10 mm.

8–16 (distinct), ovate, hairy.

6–14, lanceolate to ovate, hairy.

black or gray, clavate, to 1.5 mm, usually scabrous, rarely glabrous;

pappi usually of (3–)4(–5) subulate, aristate scales plus 3–5+ shorter, ± subulate scales or teeth, rarely of aristate scales only, or 0.

black, linear to narrowly clavate, to 2.5 mm, hairy;

pappi usually of 5–6+ lanceolate to ovate scales (1–5 uniaristate), sometimes of 4–5 subulate, aristate scales, or 0.

appendages linear to narrowly ovate.

appendages elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs).

= 12.

= 8, 10.