Flora of North America species comparison

1–5+, ascending to erect (light to dark brown), proximally glabrous, distally strigose, stipitate-glandular.

1–5+, ascending or erect, glabrous or hirsute.

(light green) firm, margins entire, scabrous;

basal sometimes persistent, sessile, blades (1–3-nerved) linear-oblanceolate, 10–30 × 4–10 mm, bases attenuate, apices obtuse, mucronate, faces glabrate to sparsely scabrous;

proximal cauline withering by flowering, sessile, blades (3-nerved) narrowly oblanceolate, 20–80 × 2–8 mm, bases cuneate, apices obtuse to acute, mucronulate or white-spinulose, faces glabrous or moderately short-strigose, stipitate-glandular;

distal sessile, blades linear-oblanceolate to -lanceolate or oblong (distally), 20–50 × 2–5 mm, ± reduced distally, bases ± clasping to cuneate, apices acute, mucronulate, faces glabrous or moderately short-strigose, stipitate-glandular.

thin, margins entire, apices usually acute, faces glabrous or sparsely puberulent;

basal withering by flowering, petiolate, blades (linear-)oblanceolate to obovate, 30–200 × 4–40 mm, bases attenuate, margins entire to finely serrate, apices acute;

proximalmost cauline sometimes withering by flowering, sessile, blades broadly to narrowly oblanceolate, 40–150 × 5–30 mm, bases usually ± attenuate or cuneate;

distal sessile, blades lanceolate to oblanceolate, 25–90 × 5–30 mm, bases cuneate.

sparsely to moderately short-strigose, moderately stipitate-glandular, bracts ± ascending, linear to narrowly-lanceolate.

puberulent, bracts 3–10, lanceolate to elliptic, margins often scabrous to ciliolate.

campanulate to cylindro-campanulate, 5.5–8 mm.

campanulate, 5–8 mm.

15–31;

corollas violet, laminae (5–)6–15 × 1–2 mm.

15–40;

corollas violet, laminae 9–15 × 1.5–2.5 mm.

25–40;

corollas yellow, 4.5–6 mm, lobes triangular, 0.4–0.8 mm.

35–60+;

corollas yellow, 4–8 mm, lobes triangular, 0.5–1 mm.

in 3–4 series, linear to lanceolate, subequal to unequal, bases ± indurate, margins scarious, green zones covering distal portion, apices acute to acuminate, outer ± foliaceous, spreading to reflexed, faces glabrate, sparsely to densely stipitate-glandular.

in 3–5 series, oblanceolate or oblong (outer) to linear (inner), unequal to subequal (outer usually shorter than inner, if so, lengths less than 3 times widths), bases scarious (outer) less than 1/2 or sometimes wholly foliaceous, inner scarious, margins eciliate or ciliolate, green zones oblanceolate to obovate or linear (innermost), apices (outer) obtuse, (inner) acute, faces glabrous or puberulent.

1–10(–30), borne singly or in paniculiform arrays, branches ascending.

in open, paniculiform arrays, some branches at least 20+ cm.

light brown, sometimes translucent reddish brown between ribs, narrowly obovoid, ± compressed, 2–2.5 mm, 3–4-nerved (faint), moderately strigose on ribs;

pappi tawny, 3.8–6 mm.

brown, cylindric to obovoid, not compressed, 3.5–4.5 mm, 2–4-nerved, faces hairy;

pappi white to tawny, 4–8 mm.

= 10.

= 48, 64, 96.