Flora of North America species comparison

usually 1, erect, subglabrous to puberulent and/or tomentose;

branches 0–several, stiffly ascending.

1 or few, erect, densely gray-tomentose;

branches 0 to several, ascending to spreading.

blades ± elliptic, 8–35 × 4–8 cm, divided about halfway to midveins, lobes spreading, triangular, coarsely dentate or with a few broad lobes, obtuse to acute, main spines 1–5 mm, abaxial faces green or gray, thinly tomentose, adaxial green and glabrous to sparingly pilose;

basal often present at flowering, spiny winged-petiolate;

main cauline reduced distally, bases clasping;

distal much reduced, linear-oblong, usually less deeply lobed and often spinier than proximal.

blades elliptic to obovate, 10–30 × 8–14 cm, deeply divided nearly to midveins, lobes ascending to spreading, linear, remote, margins revolute, entire or minutely spinulose, main spines 1–2 mm, faces gray-tomentose, more densely so abaxially;

basal present or withered at flowering, petiolate;

principal cauline well distributed, bases decurrent as linear-lobed to spiny wings 1–3 cm;

distal cauline well developed.

0–20 cm.

0–5 cm.

broadly cylindric to narrowly campanulate, 3–5 × 2–4 cm, loosely arachnoid or ± glabrous, finely short-ciliate.

ovoid to campanulate, 2–3 × 2–3 cm, loosely arachnoid on phyllary margins or glabrate.

red to reddish purple, 30–45 mm, tubes 10–20 mm, throats 10–16 mm, lobes 9–11 mm;

style tips 3.5–5 mm.

dull white or pinkish-tinged (rarely rich purple), 20–30 mm, tubes 8.5–15 mm, throats 4.5–10 mm, lobes 3–8 mm;

style tips 3.5–5.5 mm.

in 6–8 series, imbricate, outer green, inner purple to red, linear-lanceolate (outer) to linear (inner), abaxial faces without glutinous ridge;

outer and mid bodies short, appressed, entire or spinulose-ciliate, apices long-spreading to ascending, entire or spinulose-ciliate or rarely with expanded, fringed appendages, spines straight, weak, 1–3 mm;

apices of inner red to purple, straight or rarely twisted, long, flat, entire.

in 6–8 series, imbricate, ovate-lanceolate (outer) to linear-lanceolate (inner), abaxial faces with narrow glutinous ridge;

outer and middle appressed, acute, spines ascending to spreading, slender, 1–2(–3) mm;

apices of inner often flexuous, flattened, spineless, scabrid.

1–6, borne singly or in corymbiform, racemiform, or spiciform arrays.

1–20+ in corymbiform arrays.

brown, 6–7 mm, apical collars narrow;

pappi 25–40 mm.

light brown, sometimes with darker streaks, 6–7.5 mm, apical collars lighter colored, very narrow;

pappi 15–30 mm, usually noticeably shorter than corolla.

= 32, 64.

= 34.