Flora of North America species comparison

2–10, erect or ascending, pale or reddish, often stout, usually glabrous, often tomentose distally.

1–4, ascending, reddish, slender, lightly tomentose, glabrescent, eglandular.

basal petiolate, blades oblanceolate to spatulate or narrowly elliptic, 80–450 × 5–60 mm (firm, leathery, succulent), margins entire or undulate, eciliate, apices acute or obtuse, faces usually glabrous, rarely puberulent, eglandular;

cauline sessile, blades lanceolate, 10–120 × 5–30 mm, bases clasping.

basal sessile to winged-petiolate, blades linear (grasslike), 40–120 × 2–5 mm, margins usually entire, rarely with a few small teeth;

cauline sessile, blades linear, 10–20 × 1–3 mm;

faces sericeous to sparsely shaggy-tomentose, eglandular.

1–5 cm.

4–8 cm.

hemispheric, 10–20 × 15–60 mm.

hemispheric, 7–10 × 13–18 mm (bases white-tomentose).

30–90;

corollas (bright yellow) 9–30 mm.

25–50;

corollas 6–10 mm.

100+;

corollas 7–13 mm.

30–60;

corollas 5–7 mm.

in 2–3 series (loose), usually green, sometimes yellowish, oblong to spatulate, 9–15 mm, subequal, margins pale, entire or denticulate, eciliate, apices ± erect, obtuse, broad.

in 2 series, loosely appressed, linear to linear-lanceolate, 8–9 mm, equal, bases chartaceous, margins entire, ciliate, apices green, acute, faces sparsely villous.

usually borne singly, terminal, sometimes 2–6 (not subtended by leaflike bracts).

usually borne singly, terminal.

narrowly oblong, compressed, 5–8 mm, 4-angled, faces striate, glabrous;

pappi tawny, 6–12 mm.

subcylindric, 2–4 mm, faces sericeous;

pappi tawny, 3–4 mm.