Flora of North America species comparison

1(–5), erect, usually branching only in array, moderately to densely hispido-villous.

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 cauline tapering to winged petioles, blades oblanceolate to ovate, 35–210 × 15–50 mm, margins serrate or crenate, apices acute, sparsely to moderately soft hispido-villous, more densely so on abaxial nerves;

rosettes on rhizome branches sometimes present at flowering;

mid and distal cauline sessile, blades elliptic, 15–50 × 5–15 mm, distally reduced, margins entire.

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.

1.5–2.5 mm, hispido-villous to canescent.

0.5–11 mm, densely short hispido-strigose;

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

campanulate, 3–5 mm.

campanulate, 5–8 mm.

7–9 (white);

laminae 3.5–4 × 1–1.5 mm.

4–8;

laminae 5–7 × 1–2 mm.

9–12;

corollas 3–4 mm, lobes 0.6–1.2 mm.

10–18;

corollas 5–7 mm, lobes 1.5–2.2 mm.

in 3–4 series, appressed, strongly unequal, oblong, margins white, scarious, apices obtuse to rounded.

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.

12–270 (1–15 per branch) in usually wand-shaped paniculiform arrays, of short axillary and terminal racemiform, non-secund clusters, sometimes proximal branches elongated, ascending and bearing short axillary and terminal racemiform clusters.

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.

(narrowly obconic) 1.5–2.5 mm, smooth or with 5–8 narrow, darker, sunken striations, glabrous or sparsely strigose;

pappi 2.5–3.5 mm (sometimes strongly clavate).

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

pappi 4–6 mm (some clavate).

=18.