Flora of North America species comparison

1–10+, erect, glabrous.

1–10+, ascending-erect, glabrous, sometimes sparsely strigose in arrays.

basal and proximal cauline usually withering by flowering (other rosettes may be present), tapering to long, winged petioles, blades often recurved, linear- lanceolate or -oblanceolate, 100–240 × 8–16 mm, folded along midrib (V-shaped in cross section), bases usually with (2–)3–8 prominent lateral nerves, apices acute to obtuse, faces glabrous;

mid to distal cauline sessile, blades recurved, linear-lanceolate, 50–70 × 8–11 mm, reduced distally, folded, bases with prominent lateral nerves.

sometimes rosettes of smaller leaves present at flowering;

basal and proximal cauline tapering to elongate, winged petioles, bases nearly sheathing stems, blades linear-lanceolate, 50–200 (including petiole) × 4–9 mm, reduced distally, margins entire, apices acute, faces glabrous;

mid and distal cauline sessile, blades linear, 25–100 × 3–7 mm, reduced distally and sometimes scalelike, margins entire.

2.8–4 mm, moderately short-hispido-strigose, lanceolate bracteoles 0–1.

3–8 mm, glabrous or glabrate;

bracteoles 3–6, grading into phyllaries.

narrowly campanulate, 4.5–6 mm.

campanulate, 2.5–4 mm.

7–9;

laminae 4.5–5.5 × 0.4–0.5 mm.

8–10;

laminae 1.2–2.5 × ca. 0.75 mm.

6–10;

corollas 4.5–5.2 mm, lobes 0.7–1.8 mm.

10–21;

corollas 2.8–4 mm, lobes 1 mm.

(14–18) in 3–4 series, unequal, obtuse, broad, striations weak, obtuse to rounded, glabrous.

in 3–4 series, linear-triangular, outer 1/3–1/2 length of inner, 1–3 × 0.4–0.9 mm, unequal, margins involute apically, midribs usually enlarged and translucent, inner with margins involute, apices sharply acute.

30–450 in corymbiform to somewhat paniculiform with rounded corymbiform branches (robust plants) arrays, branches and peduncles strigillose.

15–190, in racemiform to narrowly paniculiform arrays, rarely slightly secund, 12–45 × 2–11 cm, branches ascending.

1.5–2.2 mm, glabrous;

pappi 3.5–4 mm (apically clavate).

(obconic) 1–1.5 mm (4–7 ribs lighter than body), sparsely to moderately strigose;

pappi 1.5–2 mm.

= 18.

= 18.