Flora of North America species comparison

usually 1, ascending to erect, uniformly short villoso-strigose, occasionally glabrate proximally.

1–50+, erect, glabrous or densely hispid to strigose.

basal and proximal cauline short-petiolate, blades broadly ovate or elliptic-ovate, margins serrate, ± 3-nerved and pinnately nerved, abaxial faces (at least) evenly short villoso-strigose;

mid and distal cauline like proximal, 20–70 × 10–40 mm (1.3–2 times as long as wide), usually only those near arrays reduced and 1-nerved.

basal withering by flowering;

proximal cauline usually withering by flowering, sessile, blades elliptic to lanceolate, 68–104 × 20–25 mm, margins sharply serrate, apices acute to attenuate, abaxial faces usually hispido-strigose (at least on main nerves), nerves sometimes prominent, abaxial glabrate;

mid to distal cauline sessile, blades lanceolate, elliptic or ovate, (15–)40–75(–90) × (6–)12–22(–32) mm, largest at midstem, somewhat reduced to much reduced distally, margins coarsely to finely serrate, ciliate, indument similar to proximal or denser.

1–6 mm;

bracteoles ovate, minute, grading into phyllaries.

1–1.8 mm, sparsely to densely hispido-strigillose;

bracteoles linear- lanceolate to ovate.

campanulate, 3–4.5 mm.

narrowly campanulate, (2–)2.5–3.5(–4.5) mm.

3–7;

laminae 1.5–2 × 0.5–1 mm.

(4–)6–8(–12);

laminae (0.9–)1–1.6(–2.3) × 0.4–0.7 mm.

4–7;

corollas (abruptly ampliate) 3–3.5 mm, lobes ca. 1 mm.

(2–)4–6(–8);

corollas 2–3.5(–4.5) mm, lobes (0.5–)0.7–1(–1.3) mm.

in 3 series, strongly unequal, obtuse or rounded;

mid broadly oblong, inner narrowly so.

in 3–4 series, strongly unequal, lanceolate to linear-lanceolate, acute to obtuse.

30–200+, apparently sometimes drooping, in open leafy, secund pyramidal, paniculiform arrays, branches recurved, leafy-bracteate, secund, proximalmost branch sometimes separated by several nodes from next.

50–1500, secund, in secund-pyramidal paniculiform arrays 7–36(–50) × 9–26 cm, compact to lax, branches divergent and recurved, longest 0.8–34 cm, leafy-bracteate.

1.5–2 mm (4–8 translucent ribs), moderately short-strigose;

pappi 2–2.5 mm.

(narrowly obconic) 0.9–1.5 mm, moderately strigillose;

pappi 1.8–2.5 mm.

= 18.