Flora of North America species comparison

1–12+, erect or ascending, straight and rigid, sometimes sprawling from base, branching from base and distally, glabrous, glaucous.

1–15+, mostly erect to ascending, rarely reclining, slender, much branched distally or throughout, glaucous, glabrous or sparsely gland-dotted from midstem distally.

mostly cauline;

sessile (± appressed);

blades oblanceolate, 20–30 × 3–5 mm, reduced distally, (thick, succulent) bases broadened, margins entire (incised to dentate in hybrids with A. parviflora) eciliate or with 1–8 cilia per side, apices linear, spiny-mucronate, glabrous;

distal subulate, entire.

mostly cauline;

sessile;

blades lanceolate to oblong, reduced distally, 10–30 × 2–7 mm, bases often clasping, margins shallowly or deeply pinnatifid to 2-pinnatifid, toothed, or entire, apices apiculate to rounded, faces glabrous to sparsely stipitate-glandular;

distal ascending to appressed.

hemispheric, 10–12 × 10–16 mm (fresh).

hemispheric, 3–5 × 4–6 mm (fresh).

50–80+;

laminae bluish purple to lavender, 10–12 mm, coiled after flowering.

10–30+;

laminae violet-blue to lavender, rarely whitish, 6–8 mm, coiled after flowering.

45–100+;

corollas yellow, 3.5–5 mm.

18–40+;

corollas yellow, 4–5 mm.

in 4–5 series, appressed, linear-lanceolate, 2–8 mm, bases whitish to tan, margins entire to laciniate, apices green, acute to acuminate, glabrous.

in 3–4 series, ± appressed, lanceolate to oblanceolate, 1–4 mm, bases whitish, margins ± entire, apices green or purple, mostly acute, minutely glandular.

borne singly (terminal), often in loose, leafy, cymiform arrays.

borne singly (terminal), in loose, leafy, corymbiform arrays.

oblanceoloid, 2.5–3 mm, 11–13-nerved per face, faces sparsely sericeous;

pappi: white, setose;

ray 3–3.5 mm;

disc 3–4 mm.

oblanceolate, 1.5–2 mm, 8–10 per face, faces moderately sericeous;

pappi setose;

ray 0 or white, 1–1.5 mm;

disc whitish, 4–5.5 mm.

= 10.

= 10.