Flora of North America species comparison

1–10+, erect, stout, hairy.

1–5+, erect, glabrous or branches of arrays puberulent.

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 and proximal cauline withering by flowering;

mid and distal cauline numerous (to 50+ on taller stems), sessile or nearly so (bases of blades sometimes subauriculate and rounded to short petioles), blades elliptic or lanceolate-elliptic, larger 60–150 × 15–35 mm, little reduced distally, margins serrate to entire, not 3-nerved, obscurely to obviously reticulately nerved, faces barely rugose, glabrous.

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

4–10 mm, sparsely to moderately strigose;

bracteoles 1–3+, linear-lanceolate, usually a few near head grading into phyllaries.

campanulate, 6–8 mm.

campanulate, 4–6 mm.

6–13;

laminae 1.4–5.4 × 1.2–1.9 mm.

6–10;

laminae 2–3 × 0.8–1.3 mm.

14–35;

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

4–7;

corollas 3–4 mm, lobes 0.9–1.3 mm.

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

in 4–5 series, strongly unequal, margins apically ciliate, obtuse to rounded, glabrous;

outer ovate-lanceolate, inner linear-lanceolate, relatively broad, 0.7–1.2 mm.

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

35–800, in paniculiform arrays, sometimes leafy-bracteate, with short or elongate, slightly to strongly recurved, secund branches.

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

pappi 3–4 mm.

(obconic) 1.5 mm, sparsely strigose;

pappi 3.5–5 mm.

= 18, 36, 54.