Flora of North America species comparison

glabrous or slightly tomentose.

erect, usually simple.

basal wing-petioled, blades 15–60+ cm, margins coarsely lobed;

cauline leaves clasping, progressively smaller and less divided, bases spiny, coiled, auriculate.

basal and cauline; petiolate (basal and proximal cauline) or sessile (distal cauline);

blades adaxially variegated, margins dentate and often coarsely pinnately lobed, teeth and lobes spine-tipped, glabrous or puberulent.

flat, epaleate, covered with whitish bristles.

25–100+;

corollas pink to purple, tubes slender, distally bent, abruptly expanded into short throats, lobes linear;

stamen filaments connate, anther bases sharply short-tailed, anther appendages oblong;

style branches: fused portions with slightly swollen subterminal nodes, distally cylindric, distinct portions minute.

26–35 mm;

tubes 13–25 mm, throats campanulate, 2–3 mm, lobes 5–9 mm.

many in 4–6 series, unequal, outer and mid with appressed bases and spreading, lanceolate to ovate, spiny-fringed, terminal appendages, at least mid spine-tipped, innermost with erect, flat, entire, spineless apices.

discoid, borne singly, terminal and in distal axils. (Peduncles with reduced leaflike bracts.) Involucres ovoid to spheric, 15–60 mm diam.

brown and black spotted, 6–8 mm;

pappus scales 15–20 mm.

ovoid, slightly compressed, not ribbed, apices with smooth, entire rims, glabrous, basal attachment scars slightly angled;

pappi falling in rings, outer of many minutely barbed, basally connate, subulate scales, inner of minute smooth bristles.

appendages spreading, ovate, 1–4 cm including long-tapered spine tips.

= 17.

= 34.