Flora of North America species comparison

1–5+, ascending to erect, glabrous or sparsely puberulent.

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

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

basal persistent, petiolate, blades narrowly elliptic to obovate, 50–150 × 3–15 mm, attenuate, margins entire;

proximal cauline sessile or subpetiolate, blades linear to narrowly elliptic, 50–150 × 2–15 mm, bases attenuate or cuneate;

distal sessile, blades 30–60 × 2–10 mm, reduced distally, bases cuneate to rounded.

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.

sparsely hairy, bracts 0–3+.

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

campanulate, 5–10 mm.

campanulate, 4–7 mm.

15–40;

corollas violet, laminae 9–15 × 1–2 mm.

14–35;

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

30-80(–100);

corollas yellow, sometimes becoming reddish, 4.5–6 mm, lobes triangular, 0.5–1 mm.

20–35;

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

in 3–5 series, narrowly oblong or linear (outer) to linear (inner), unequal, bases indurate, margins entire, green zones elliptic to lanceolate, apices usually acute, sometimes obtuse, faces glabrous or ± puberulent.

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 corymbiform to paniculiform arrays, branches usually few.

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

brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, ± 4-nerved, faces hairy;

pappi whitish, 5–7 mm.

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

pappi white, 5–7 mm.

= 16, 32, 48.