Flora of North America species comparison

1–6(–10), erect, short-canescent (hairs ascending to appressed).

basal and proximal cauline tapering to long, winged petioles, blades spatulate-ovate to oblanceolate, 20–95 × 7–15 mm, margins crenate to entire, apices acute, faces densely puberulent;

mid and distal cauline (sometimes subtending axillary tufts of lateral branch leaves) sessile, blades linear-oblanceolate, 16–45 × 3–7 mm, reduced distally, margins entire.

oblanceolate to obovate, usually crenate.

2–3.5 mm, bracteoles 0–4, linear.

usually 2.6–4.2+ mm (larger in tetraploids).

narrowly campanulate, 2.6–5.8 mm.

5–11;

laminae 2.8–5.5 × 0.3–0.7 mm.

3–10; 2.5–4.6 mm, lobes 0.4-0.6 mm.

lobes 0.5–0.9(–1) mm.

in 3 series, ovate to linear-lanceolate, unequal, outer acute, inner obtuse.

10–300, secund, in wandlike pyramidal, paniculiform arrays, secund to apically recurved, 8–25 × 2.5–10 cm, sometimes proximal branches elongate, repeating pattern.

usually only sparsely strigose;

pappi usually not or barely exceeding ray corolla tubes and bases of disc corolla lobes.

(obconic) 0.5–2 mm, strigose;

pappi 2–4 mm.

= 18, 36.