Flora of North America species comparison

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

1–10+, ascending to erect, glabrous or sparsely puberulent.

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.

thin, margins entire or sometimes serrate, apices acute;

basal withering by flowering, petiolate, blades narrowly lanceolate, 60–200 × 10–20 mm, attenuate or cuneate, margins usually entire, sometimes serrate, apices acute, faces glabrous or sparsely puberulent;

proximalmost cauline sometimes withering by flowering, sessile, blades narrowly lanceolate, 50–150 × 8–25 mm, bases cuneate, often auriculate, apices acute;

distal sessile, blades linear to narrowly lanceolate, 20–120 × 3–20 mm, bases cuneate, often auriculate, apices acute.

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

sparsely hairy, bracts linear to lanceolate.

campanulate, 5–8 mm.

campanulate, 5–8 mm.

15–40;

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

20–40;

corollas white to pink, laminae 7–15 × 1–2 mm.

35–60+;

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

35–60+;

corollas yellow, 4.5–5 mm, lobes triangular, 0.5–0.75 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 3–5 series, often spreading, oblanceolate (outer) to linear (inner), subequal, outer indurate less than 1/2, bases outer variable, inner scarious, margins entire, scabrous to ciliolate, green zones oblanceolate to elliptic, apices acute to obtuse, often spreading, faces glabrous or sparsely puberulent.

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

in racemiform to narrow, paniculiform arrays, branches usually to 10 cm.

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

pappi white to tawny, 4–8 mm.

brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, 1–2-nerved, faces hairy;

pappi white, 5–6 mm.

= 48, 64, 96.

= 16, 32, 48, 64.