Flora of North America species comparison

1, erect to arching, light to dark brown, soft-hairy, hairs ascending- to spreading- stipitate-glandular distally.

1–6, ascending to erect, glabrous or puberulent, especially distally.

(dark green) thin, almost membraneous;

basal early deciduous, sessile or subpetiolate, blades spatulate to obovate, 80–140 × 20–30 mm, bases cuneate, margins entire to ± serrate, scabrous, apices acute;

proximal cauline withering by flowering, sessile, blades panduriform, (20–)30–70(–110) × 10–30(–35) mm, bases auriculate-clasping, margins entire (flat), sparsely villoso-ciliate, apices acute, faces finely sparely villous or scabrous, stipitate-glandular;

distal sessile, blades (rugose-veined when fresh) ovate to lanceolate, 75–125(–140) × 15–35(–40) mm, bases strongly cordate-clasping to auriculate-amplexicaul, margins entire (± undulate), apices acute, acuminate to merely mucronate, faces sparsely strigose, moderately so along veins, sparsely to moderately stipitate-glandular.

thin, margins entire, apices acute, faces glabrous or scabridulous;

basal withering by flowering, petiolate, blades narrowly oblanceolate to linear, 10–60 × 2–10 mm, attenuate, margins entire;

proximalmost cauline sometimes withering by flowering, sessile, blades linear to narrowly oblanceolate, 30–80 × 2–8 mm, bases cuneate, apices acute;

distal sessile, blades linear, 10–50 × 2–8 mm, bases ± cuneate, truncate.

short (less than 4 cm), strigose, stipitate-glandular, bracts linear-lanceolate, ascending-appressed, grading into phyllaries.

sparsely to densely hairy, bracts 3–10, linear to narrowly elliptic, much smaller than distal leaves.

cylindric, 5.5–7.5(–8) mm.

campanulate, 4–7 mm.

9–17;

corollas light to dark reddish purple, laminae 10–18(–20) × 1–3 mm.

14–35;

corollas usually white, sometimes pale violet, laminae 7–12 × 1–2 mm.

15–35;

corollas white with purple lobes, 6–8 mm, lobes triangular, 1–1.5 mm.

20–35;

corollas yellow, 4.5–6.5 mm, lobes triangular, 0.7–1 mm, glabrous.

in 4–6 series, linear-lanceolate, unequal, bases (tan) ± indurate in proximal 1/3–1/2, margins hyaline, erose, distally scabro-ciliolate to ciliolate, green zones covering distal 1/2, apices outer obtuse to acute, inner acuminate, purplish, faces sparsely strigillose, usually moderately to densely stipitate-glandular, rarely sparsely so.

in 5–6 series, appressed, narrowly oblanceolate (outer) to linear (inner), unequal, bases (outer) herbaceous or scarious less than 1/2, margins entire, green zones ovate to linear (inner), apices obtuse, faces glabrous.

in crowded, paniculiform arrays, branches often initially patent then ascending.

in racemiforn to paniculiform arrays, branches usually less than 10(–20) cm.

dark brown to black, obovoid, not compressed, 2.5–4 mm, 7–10-nerved, faces densely strigose along ribs;

pappi tan to tawny, sometimes slightly purplish-tinged, 6–8 mm.

brown, cylindric to obovoid, not compressed, 2–2.5 mm, 2–5-nerved, faces hairy;

pappi white, 5–7 mm.

= 20.

= 16, 32, 48.