Flora of North America species comparison

1–20+, erect, proximally sparsely to moderately strigoso-villous, distally usually moderately to densely so.

1–3+, erect, flexuous in proximal arrays, moderately to densely villous.

basal 0;

proximal cauline sessile, blades narrowly to broadly oblanceolate, 35–75(–100) × (6–)7.5–14(–20) mm, proximal much smaller, tapering to bases, margins subentire or finely serrulate to coarsely, sharply serrate (teeth 0–9 per side), ciliate, 3-nerved, sometimes obscurely so, apices acute, abaxial faces glabrate to sparsely short-strigose, adaxial glabrous;

mid to distal cauline sessile, blades oblanceolate, becoming lanceolate distally, 20–60 × 4–8(–11) mm, largest near mid stem, somewhat to much reduced distally, margins entire or finely serrulate, rarely serrate (teeth 1–8 per side), usually becoming entire to sparsely serrulate distally, ciliate, apices acute, faces glabrous or sparsely strigoso-villous, more so along abaxial nerves.

basal withering by flowering;

basal and proximal cauline abruptly tapering to winged, villous petioles (petioles ± 1/2 or less total leaf length), blades broadly ovate to spatulate, 46–80(–90) × 23–47(–55) mm, margins serrate [teeth 6–12(–15)], abaxial faces moderately villous, more so along nerves, adaxial sparsely to moderately villoso-strigose;

distal cauline petiolate, similar to proximal or more elliptic, 27–45 × 13–20 mm, margins entire to slightly serrate.

2–7 mm, sparsely to moderately short strigoso-villous;

bracteoles 1–3, linear, rarely minutely stipitate-glandular.

3–5 mm, sparsely strigose;

bracteoles 1–3 scattered, ovate.

narrowly campanulate, 2.5–3.5(–4) mm.

campanulate, 4.3–6.5(–7) mm.

(8–)11–15(–17);

laminae 1–2.5 × 0.1–0.4(–0.7) mm.

3–5;

laminae 2.4–4 × 1–1.5 mm.

(3–)5–11(–16);

corollas 2.6–3.7(–4) mm, lobes 0.5–1.2 mm.

5–8;

corollas 2.2–2.5 mm, lobes ca. 1–2 mm.

in 3–4 series, strongly unequal, margins sparsely long ciliate, acute, faces glabrous, rarely sparsely minutely stipitate-glandular;

outer lanceolate, inner linear-lanceolate.

in ca. 3 series, unequal, outer ovate, 1–1.5 mm, obtuse to acute, inner oblong, 1-nerved.

12–500+, sometimes secund, in short to long, thyrsiform or narrowly secund-pyramidal paniculiform arrays, usually congested, club-shaped to rarely wand-shaped, (2.5–) 10–20 × (2–)4–8(–10) cm, branches usually ascending or sometimes arching spreading.

10–30, in short axillary and terminal racemiform/paniculiform clusters.

(narrowly obconic) 1–1.5 mm, sparsely to moderately strigose;

pappi 2.5–3.3 mm.

(obconic) 1–2 mm, moderately hairy;

pappi 2.3–2.8 mm.

= 18, 36.

= 36.