Flora of North America species comparison

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

1, erect (straight, often reddish), glabrous.

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.

coriaceous, margins remotely serrulate or entire, slightly revolute, scabrous, apices mucronulate, faces glabrous;

basal withering by flowering, long-petiolate (petioles narrowly winged, bases sheathing), blades lanceolate to oblanceolate, ca. 55+ × 3+ mm, bases slightly attenuate, apices acute;

proximal cauline mostly withering by flowering, petiolate (petioles narrowly winged, sheathing), blades lanceolate or oblanceolate to linear-lanceolate or -oblanceolate, arcuate, 90–160 × 5–18 mm, bases cuneate to slightly attenuate, margins entire or serrulate, apices acute;

distal sessile, blades linear to linear-lanceolate, 8–50 × 1.5–5 mm, progressively reduced distally, more strongly so in arrays, bases cuneate to rounded, sometimes slightly clasping, apices acute to acuminate.

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

0.8–5.7 cm, slender, sparsely ot moderately pilosulous, bracts 3–5, linear-lanceolate, often crowded proximal to and surpassing heads.

campanulate, 5–8 mm.

campanulate, 6–10 mm.

15–40;

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

25–44;

corollas usually pale purple or lilac, sometimes white, laminae 9.5–20 × 0.7–1.4 mm.

35–60+;

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

29–52;

corollas yellow becoming reddish purple, 5–6 mm, tubes slightly shorter than funnelform throats, lobes lanceolate, 0.6–0.7 mm.

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.

in 2–3 series, oblong-oblanceolate or -spatulate (outer) or oblong-lanceolate to linear-lanceolate or linear (inner), ± unequal, bases indurate 1/3–3/4, margins hyaline, scarious, erose distally, sparsely ciliolate distally, green zones lanceolate, outer often foliaceous distally, apices acute to long-acuminate, ± spreading, faces glabrous.

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

in elongate, loosely racemiform arrays, branches ascending, heads single at ends of primary branches or long pedicels.

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

pappi white to tawny, 4–8 mm.

reddish tan, obovoid, compressed, 1.5–2.8 mm, 4–5-nerved, faces strigillose;

pappi yellowish, 7–8 mm.

= 48, 64, 96.

= 80.