Flora of North America species comparison

1(–5), erect, usually branching only in array, moderately to densely hispido-villous.

usually single, erect, essentially glabrous basally to hispidulo-puberulent in arrays.

basal and proximal cauline tapering to winged petioles, blades oblanceolate to ovate, 35–210 × 15–50 mm, margins serrate or crenate, apices acute, sparsely to moderately soft hispido-villous, more densely so on abaxial nerves;

rosettes on rhizome branches sometimes present at flowering;

mid and distal cauline sessile, blades elliptic, 15–50 × 5–15 mm, distally reduced, margins entire.

basal and proximal cauline tapering to long, winged petioles (quickly reduced distally on stems), blades broadly oblanceolate to obovate, 40–150 × 15–50 mm, margins serrate, finely ciliate, apices acute to obtuse, faces glabrous;

mid and distal cauline sessile, blades linear-elliptic, 5–50 × 2–10 mm, margins entire, finely ciliate.

1.5–2.5 mm, hispido-villous to canescent.

1–3 mm.

campanulate, 3–5 mm.

narrowly campanulate, 3.5–6.5 mm.

7–9 (white);

laminae 3.5–4 × 1–1.5 mm.

5–9;

laminae 2.5–3.5 × 0.7–1 mm.

9–12;

corollas 3–4 mm, lobes 0.6–1.2 mm.

commonly 6–10;

corollas 4 mm, lobes ca. 1 mm.

in 3–4 series, appressed, strongly unequal, oblong, margins white, scarious, apices obtuse to rounded.

in 3–5 series, appressed, strongly unequal, outer ovate, inner broadly oblong, obtuse to rounded, glabrous.

12–270 (1–15 per branch) in usually wand-shaped paniculiform arrays, of short axillary and terminal racemiform, non-secund clusters, sometimes proximal branches elongated, ascending and bearing short axillary and terminal racemiform clusters.

15–350 (1–10 per branch), clustered on short divergent lateral branches in elongate and usually narrowly paniculiform arrays, often interrupted proximally, not secund, sometimes with ascending, straight or arching, elongate branches (like main axis).

(narrowly obconic) 1.5–2.5 mm, smooth or with 5–8 narrow, darker, sunken striations, glabrous or sparsely strigose;

pappi 2.5–3.5 mm (sometimes strongly clavate).

(tan) ca. 2.5 mm, glabrous;

pappi 3 mm.

=18.

= 18.