Flora of North America species comparison

1–several, usually erect, often stout, glabrous to densely tomentose;

branches 0–many, spreading to ascending, short, stout.

blades linear to oblanceolate or oblong-elliptic, 10–40 × 2–10 cm, unlobed and spiny-dentate to deeply pinnatifid, lobes spiny-dentate or coarsely lobed, main spines stout, 5–30 mm, abaxial faces subglabrous to loosely tomentose, adaxial glabrous to ± densely villous with septate trichomes;

basal present at flowering, spiny winged-petiolate, bases often tapered;

principal cauline sessile, well distributed, often not much reduced distally, bases often ± auriculate-clasping;

distal cauline often spinier than the proximal.

0–5 cm.

hemispheric to campanulate, 3–5 × 3–8 cm.

white to yellow, pink, purple, or red, 30–47 mm, tubes 11–30 mm, throats 6–10 mm, lobes 7–10 mm;

style tips 3–5 mm.

in 5–9 series, subequal to imbricate, light green to stramineous, lanceolate to linear, distally often with reddish margins, abaxial faces without glutinous ridge, often ± thinly tomentose, often scabridulous in submarginal bands;

outer and middle appressed-ascending, bodies usually reddish-tinged, margins setulose-ciliolate, apices acuminate, spines 1–2 mm, weak;

apices of inner straight, flat.

1–20 in subcapitate to corymbiform arrays (each closely subtended by an involucre-like ring of spiny-margined bracts).

straw-colored to tan, 4–6 mm, apical collars weakly differentiated;

pappi 25–35 mm.

= 32, 33, 34, 35.