Flora of North America species comparison

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

1–20(–50+), stout, finely puberulent or scabrous-puberulent at least distally.

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 absent at flowering;

cauline sessile to short-petiolate;

blades usually lanceolate-elliptic or ovate, sometimes linear-lanceolate, 30–150 × 5–30 mm, thick and firm, margins entire or few toothed, somewhat to much reduced distally, abaxial faces sometimes resinous and shiny, glabrous or strigillose (hairs mostly 0.1–1.4 mm), adaxial glabrous or scabrous.

1.5–2.5 mm, hispido-villous to canescent.

mostly 2–15 mm, bracteolate, sparsely to densely short hispid-strigose.

campanulate, 3–5 mm.

campanulate, 4.5–7.5 mm.

7–9 (white);

laminae 3.5–4 × 1–1.5 mm.

(5–)7–9;

laminae 3–7 × 1–2 mm.

9–12;

corollas 3–4 mm, lobes 0.6–1.2 mm.

(8–)10–16;

corollas 4–5 mm, lobes ca. 1–2 mm.

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

in 3–4 series, unequal, linear-lanceolate, acute to attenuate, ± squarrose-tipped, glabrous or moderately strigose, sparsely to moderately stipitate-glandular, sometimes viscid.

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.

10–190+ in paniculiform (rarely racemiform) arrays, usually elongate, usually leafy-bracteate, bracts similar to distal leaves but reduced;

branches stiffly ascending, not secund, sometimes elongate.

(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).

3–4 mm, glabrous or glabrate;

pappi ca. 4 mm.

=18.

= 18, 36, 54.