Flora of North America species comparison

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

1–5+, erect, straight, moderately hairy in arrays.

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 withering by flowering;

proximal cauline subpetiolate or sessile, tapering to broadly winged petiole-like bases, blades lanceolate, 110–180 × 2–35 mm, margins serrate (with 7–15 teeth), apices acuminate, abaxial faces sparsely hairy along nerves, adaxial glabrous or sparsely hairy;

distal cauline sessile, blades narrowly elliptic, 60–110 × 11–15 mm, margins entire to slightly serrate (teeth 0–6), apices acuminate-cuspidate, faces glabrous or sparsely hairy.

0.5–2 mm;

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

1–5 mm, moderately strigose;

bracteoles linear, 0–2.

narrowly campanulate, 3–5 mm.

campanulate 6.4–8.5(–9) mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

5–8;

laminae 2.3–4.5 × 1–1.5 mm.

4–6;

corollas 3 mm, lobes 1 mm.

(5–)6.2–8.1(–12);

corollas (2.8–)3–3.3(–3.9) mm, lobes (1.3–)1.5–1.8(–2.1) mm.

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

in 3–4 series, unequal, 3–10-nerved, acute to obtuse;

outermost linear-lanceolate to narrowly ovate, 1.7–2.4 mm, innermost linear-oblong, 4–6 mm.

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

80–400 (usually 4–10 per branch) in short axillary and terminal racemiform/paniculiform arrays 11–43 cm.

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

pappi 3 mm.

(narrowly obconic) 1–1.7(–2) mm, moderately to densely strigillose;

pappi (3.4–)4–5 mm.

= 18, 36.

= 90.