Flora of North America species comparison

usually 1–3, ascending to erect, scabrous to loosely puberulent.

1–10+, ascending-erect, glabrous, often short fascicles of leaves present at nodes in axes of distal cauline leaves.

basal and proximal usually withering by flowering, tapering to long-winged petioles, blades oblanceolate, 30–100 × 7–20(–30) mm, margins serrate or crenate, mid usually largest, apices acute to obtuse, acuminate, faces scabrous;

mid and distal cauline subsessile (1 mm) or sessile, blades (sometimes ± shiny) elliptic to oblanceolate, 10–50 × 5–15(–25) mm, greatly reduced distally, grading into bracts, firm, bases convex-cuneate to rounded, margins finely serrate, often 3-nerved, nerves usually distinct abaxially, faces distinctly scabrous.

rosettes present at flowering;

basal and proximal cauline tapering to elongate, winged petioles, bases nearly sheathing stems, blades linear-lanceolate, 50–260 (including petiole) × 5–45 mm, somewhat fleshy (fresh), margins entire, faces glabrous;

mid and distal cauline crowded (robust plants), sessile, blades linear-lanceolate to lanceolate, 20–130 × 5–10(–25) mm, reduced distally, margins entire, apices acute to attenuate, glabrous.

0.5–2 mm;

bracteoles 1–5, linear-lanceolate to ovate, minute, grading into phyllaries distally.

2–8 mm, glabrous or sparsely strigose;

bracteoles 1–3, distally grading into phyllaries.

narrowly campanulate, 3–5 mm.

campanulate, 2.5–4 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

8–12;

laminae 1–2.5 × 1 mm.

4–6;

corollas 3 mm, lobes 1 mm.

10–20;

corollas 3–4 mm, lobes 1–1.5 mm.

in 3–4 series, unequal, oblong, midnerves swollen distally, obtuse or acute to slightly acuminate.

in 3–4 series, linear-triangular, unequal, margins involute near tip, sharply acute, the outer 1/3–2/3 length of inner (1–3 × 0.4–0.9 mm), midribs usually enlarged and translucent.

20–260, in paniculiform arrays, narrowly to broadly secund, pyramidal, branches recurved, secund.

70–320, usually not secund, in thyrsiform-paniculiform arrays, sometimes apically secund, 5–25(–50) × 2–14 cm;

branches ascending to arching.

1.5–2.5 mm, sparsely to moderately short-strigose;

pappi 3 mm.

(narrowly obconic) 2 mm (5–7 broad ribs lighter than body), sparsely to moderately strigose;

pappi 2–3 mm.

= 18, 36.

= 18.