Flora of North America species comparison

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

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.

sparsely hairy, bracts linear to lanceolate.

campanulate, 5–8 mm.

20–40;

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

35–60+;

corollas yellow, 4.5–5 mm, lobes triangular, 0.5–0.75 mm.

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

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

pappi white, 5–6 mm.

= 16, 32, 48, 64.