Flora of North America species comparison

usually 1–3, ascending to erect, scabrous to loosely puberulent.

1(–3), ascending to erect, velutinous or loosely hirsutulous.

basal and proximal usually withering by flowering, tapering to long-winged petioles, blades oblanceolate, 30–100 × 7–20(–30) mm, margins serrate or crenate, mid usually largest, apices acute to obtuse, acuminate, faces scabrous;

mid and distal cauline subsessile (1 mm) or sessile, blades (sometimes ± shiny) elliptic to oblanceolate, 10–50 × 5–15(–25) mm, greatly reduced distally, grading into bracts, firm, bases convex-cuneate to rounded, margins finely serrate, often 3-nerved, nerves usually distinct abaxially, faces distinctly scabrous.

basal and proximal cauline petioles winged (narrowly so in proximalmost), to 10 cm, bases flared, auriculate-clasping (at least in proximalmost), blades broadly ovate, 35–120 × 30–70 mm, bases cordate, margins serrate, adaxial faces glabrate or sparsely finely scabrous or finely strigose, abaxial pilose on nerves;

mid cauline similar to proximal, petioles shorter, broadly winged, strongly auriculate-clasping;

distal sessile, blades ovate, 20–40 × 10–20 mm, bases winged, narrowed, auriculate-clasping, becoming ovate and cordate-clasping in arrays, reduced to 10 mm.

0.5–2 mm;

bracteoles 1–5, linear-lanceolate to ovate, minute, grading into phyllaries distally.

1–3 mm;

bracteoles linear-lanceolate, minute, grading into phyllaries.

narrowly campanulate, 3–5 mm.

campanulate, 3–4(–5) mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

1–3;

laminae 1–2 × 0.5–0.75 mm.

4–6;

corollas 3 mm, lobes 1 mm.

4–8;

corollas 3–3.5 mm, lobes ca. 1 mm.

in 3–4 series, unequal, oblong, midnerves swollen distally, obtuse or acute to slightly acuminate.

in 2–3 series, lanceolate, strongly unequal, acute to attenuate, sparsely short strigose.

20–260, in paniculiform arrays, narrowly to broadly secund, pyramidal, branches recurved, secund.

50–100, secund, in paniculiform arrays, branches relatively few, short to elongated and arching.

1.5–2.5 mm, sparsely to moderately short-strigose;

pappi 3 mm.

2–2.5 mm, distinctly ribbed, short-strigose;

pappi ca. 2 mm (bristles in 2 weak series, shorter than cypsela bodies, inner weakly clavate).

= 18, 36.

= 18.