Flora of North America species comparison

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

usually single, erect (proximally medium to dark brown distally lighter, sometimes cyanotic, usually rounded, shallowly many ribbed), sparsely finely hispido-strigose proximally to densely so 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.

rosettes often present at flowering, early leaves smaller;

basal and proximal cauline gradually to abruptly tapering to winged petioles, blades elliptic to ovate-elliptic, 90–210 (including petioles) × 40–70 mm, margins serrate-serrulate, ciliate, apices obtuse to broadly acute, faces abaxially glabrous or sparsely strigose, adaxially glabrous or sparsely strigose, mostly on nerves;

mid to distal cauline sessile, blades lanceolate or elliptic, 20–650 × 10–30 mm, gradually reduced distally, becoming entire, apices acute to acuminate.

0.5–2 mm;

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

0.5–11 mm, densely short hispido-strigose;

bracteoles 5–10+, grading into phyllaries, sparsely short hispido-strigose and sparsely to moderately glandular.

narrowly campanulate, 3–5 mm.

campanulate, 5–8 mm.

4–7;

laminae 2–3.5 × 0.2–0.7 mm.

4–8;

laminae 5–7 × 1–2 mm.

4–6;

corollas 3 mm, lobes 1 mm.

10–18;

corollas 5–7 mm, lobes 1.5–2.2 mm.

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

in 4–5 series, appressed, strongly unequal, outer ovate, acute, mid and inner broadly oblong (appressed), obtuse or rounded, sparsely strigose and moderately finely stipitate-glandular.

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

50–100+ (1–10 per branch, more on much elongated proximal branches), in elongate to thyrsiform-paniculiform arrays 7–22 × 3–6 cm;

branches ascending, racemiform or paniculiform, not secund, longest to 1/2 length of arrays.

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

pappi 3 mm.

(fusiform to obconic) 2.5–3 mm, moderately long-strigose;

pappi 4–6 mm (some clavate).

= 18, 36.