Flora of North America species comparison

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

usually 1, erect, glabrous, short hispido-strigose in arrays.

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 and proximal cauline tapering to long petioles that partially sheath stems;

blades oblanceolate, 100–350 × 5–60 mm, margins subentire to serrate, apices acute;

mid to distal sessile, not sheathing stems, blades lanceolate, 20–50 × 5–10 mm, much reduced distally, margins entire.

1–6 mm;

bracteoles ovate, minute, grading into phyllaries.

1–4 mm, glabrous or sparsely strigose.

campanulate, 3–4.5 mm.

3–5 mm.

3–7;

laminae 1.5–2 × 0.5–1 mm.

1–8 (moderately conspicuous);

laminae 3.2–3.7 × 0.4–0.6 mm.

4–7;

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

6–8;

corollas 4.6–5 mm, lobes 0.6–1 mm.

in 3 series, strongly unequal, obtuse or rounded;

mid broadly oblong, inner narrowly so.

(14–18) in 3–5 series, unequal, usually apically ciliate;

outer ovate, acute, inner linear-oblong, 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.

35–230 in elongate paniculiform arrays, sometimes narrow and secund pyramidal, usually narrowly to broadly, non-secund thyrsiform;

branches strongly ascending with non-secund heads to arching with heads secund.

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

pappi 2–2.5 mm.

1–2 mm, glabrous or sparsely strigillose;

pappi 2.7–3 mm (weakly clavate).

= 18.

= 18, 36.