Flora of North America species comparison

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

1–20+, erect, glabrate proximally or sparsely strigoso-villous, becoming more densely so distal to mid stem.

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.

basal 0;

proximal to mid cauline usually withering by flowering, tapering to sessile bases, blades narrowly ovate-lanceolate, 50–190 × 5–30 mm, margins sharply serrate, 3-nerved, apices acuminate, abaxial faces glabrous or more commonly hairy along main nerves, adaxial glabrous or slightly scabrous;

mid to distal similar, 30–50(–120) × 8–12 mm, largest near mid stem, reduced distally, margins usually serrate or serrulate (teeth 3–8), sometimes entire proximal to arrays.

3–5 mm, sparsely strigose;

bracteoles 1–3 scattered, ovate.

3–3.4 mm, bracteoles 0–3, linear-triangular.

campanulate, 4.3–6.5(–7) mm.

narrowly campanulate, 1.7–2.5(–3) mm.

3–5;

laminae 2.4–4 × 1–1.5 mm.

(5–)8–14(–18);

laminae 0.5–1.5 × 0.15–0.3(–0.5) mm.

5–8;

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

(2–)3–6(–8);

corollas 2.2–2.8(–3) mm, lobes 0.4–0.8(–1) mm.

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

in 3–4 series, strongly unequal, acute to obtuse;

outer lanceolate, inner linear-lanceolate.

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

(70–)150–1300+, secund, in secund pyramidal-paniculiform arrays (obscurely so and club-shaped thyrsiform in small plants or shoots with small arrays), branches divergent and recurved, branches and peduncles hairy.

(obconic) 1–2 mm, moderately hairy;

pappi 2.3–2.8 mm.

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

pappi 1.8–2.2 mm.

= 36.