Flora of North America species comparison

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

1–10(–30+), decumbent to erect, slender, tufted, proximally glabrous or sparsely hairy, densely short-hispido-strigose 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 petiolate;

petioles winged, margins ciliate;

blades linear-oblanceolate to spatulate, 10–170 × 3–30 mm, serrate to crenate near apices;

distal cauline sessile;

blades sometimes subclasping stems, ovate to linear-lanceolate, 16–20 × 7–11 mm, margins often distinctly ciliate.

1.5–2.5 mm, hispido-villous to canescent.

5–6 mm, villous;

bracteoles 0–2, linear-lanceolate to lanceolate.

campanulate, 3–5 mm.

4–8 mm.

7–9 (white);

laminae 3.5–4 × 1–1.5 mm.

12–18;

laminae 3–4 × 0.5–1 mm.

9–12;

corollas 3–4 mm, lobes 0.6–1.2 mm.

10–35;

corollas 3–5 mm, lobes 0.3–1 mm.

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

unequal to subequal, outer linear-lanceolate to lanceolate, lengths ± 2/3 inner, margins ciliate, apices acute to attenuate.

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.

4–75(–100+), not secund, in dense, round-topped corymbiform arrays;

branches white villous.

(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).

1.5–4 mm, sparsely to moderately strigose;

pappi 3–4 mm (inner bristles clavate).

=18.

= 18, 36.