Flora of North America species comparison

1–10+, erect, stout, hairy.

1–5+, ascending to erect, slender, glabrous;

distal axils bearing short lateral branches with several spreading leaves.

basal and proximal cauline usually present at flowering, abruptly narrowed to long petioles, blades ovate to rhombic, 80–200 × 24–50 mm, firm, flat, margins entire to crenate, sometimes undulate, apices obtuse to acute, faces densely hairy;

mid to distal cauline sessile, blades ovate, 30–50 × 15–17 mm, stiff, greatly reduced distally, margins entire or finely serrate, sometimes undulate, apices acute to obtuse.

basal blades mostly linear-oblanceolate, 40–160 × 10–20 mm, smallest (10 mm) nearly spatulate, margins shallowly serrate or subentire, sometimes ciliate, ± strongly 3-nerved, apices obtuse to mostly acute, faces glabrous;

mid and distal cauline spreading to reflexed, blades linear, 15–60 × 1–4 mm, reduced to linear bracts in arrays, glabrous.

3–15 mm, strigillose-canescent, bracteoles 1–3, linear-lanceolate.

1–5 mm, bracts 0–5, linear-lanceolate, 1–3 mm, distal grading into phyllaries.

campanulate, 6–8 mm.

narrowly campanulate, 3–4 mm.

6–13;

laminae 1.4–5.4 × 1.2–1.9 mm.

3–7;

laminae 2–3 × ca. 0.5 mm.

14–35;

corollas 4.3–6.1 mm, lobes 0.6–1.1 mm.

5–9;

corollas 3–3.5 mm, lobes 0.5–0.8 mm.

in 3–4 series, unequal, oblong, conspicuously striate (3–5 pronounced nerves), obtuse.

in 2–3 series, strongly unequal, oblong-lanceolate, obtuse to rounded, glabrous.

9–190, in corymbiform arrays, compact or branches long and spreading, densely hairy throughout.

50–350, secund, in paniculiform arrays, openly secund-pyramidal with proximal branches spreading recurved, or as broad as long with proximal branches widely ascending, recurved (elm-tree shaped).

(obconic) 0.8–1.7 mm (ribbed), glabrous or strigillose apically;

pappi 3–4 mm.

(obconic) 1 mm (with several prominent ridges), glabrous or slightly hairy distally;

pappi 2–3 mm.

= 18.