Flora of North America species comparison

1–20+, erect, slender, glabrous proximally, hispid distally.

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

basal and proximal cauline persistent, subpetiolate to sessile, blades sometimes 3-nerved, linear to linear-lanceolate, 60–100 × 7–10 mm, stiff, flat, margins entire or subentire, faces glabrous or sparsely hairy;

mid to distal cauline sessile, blades linear oblanceolate to linear, 20–40 × 3–5 mm, reduced distally, margins entire.

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.

29–36.5 mm, strigillose;

bracteoles linear.

2–3.5 mm, bracteoles 0–4, linear.

5–6 mm.

narrowly campanulate, 2.6–5.8 mm.

10–20, usually white, rarely pale yellow (conspicuous);

laminae 7–7.3 × 1.4–1.6 mm.

5–11;

laminae 2.8–5.5 × 0.3–0.7 mm.

30–36;

corollas 3.8–4.1 mm, lobes 0.5–0.7 mm.

3–10; 2.5–4.6 mm, lobes 0.4-0.6 mm.

in 4–5 series, usually prominently 1-nerved, linear, strongly unequal, outer acute, inner acute to obtuse, glabrous.

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

1–25(–50), in corymbiform arrays.

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

(obconic) 1–1.5 mm (ribbed), glabrous;

pappi 3.4–4 mm (apically clavate).

(obconic) 0.5–2 mm, strigose;

pappi 2–4 mm.

= 18.