Flora of North America species comparison

1–5+, flexuous, sparsely to moderately hairy in arrays.

1–5+, ascending to erect, slender, essentially glabrous;

axillary clusters of small leaves present in distal leaf axils.

rosettes present at flowering;

basal and proximal cauline tapering to winged petioles, blades ovate, (70–)100–140(–180) × (27–)40–60(–80) mm (petioles 1/4–1/2 total leaf length), margins serrate-serrulate [teeth (14–)21–33(–45)], abaxial faces glabrous or moderately hairy, more densely so on nerves, adaxial glabrous or sparsely hairy;

mid to distal cauline sessile, blades narrowly ovate to lanceolate, 38–90(–150) × 10–30(–55) mm, reduced distally, becoming lanceolate in arrays, bases tapering, margins entire to serrate, apices acuminate to cuspidate, faces glabrous or sparsely hairy, abaxial glabrous or moderately hairy, more densely so along nerves.

basal often withering by flowering, tapering to petiolar bases, blades oblanceolate, largest blades 80–170 × 10–20 mm, margins entire or slightly toothed, ± strongly 3-nerved, apices acute;

mid and distal cauline ascending to erect, blades linear-lanceolate, greatly reduced, becoming bractlike in arrays, less prominently or scarcely 3-nerved, glabrous.

0.5–5 mm, moderately to densely strigose;

bracteoles 1–3, lanceolate, usually near base of involucres and grading into phyllaries.

1–3(–5) mm;

bracts linear-lanceolate, 1–3 mm, glabrous.

campanulate, 4.5–7(–8) mm.

campanulate, 3–5 mm.

1–5;

laminae (2–)2.5–4(–5) × 0.7–2 mm.

5–8;

laminae 1–2 × 0.5–0.75 mm.

4–8(–11);

corollas 2–3(–4) mm, lobes 1–1.6(–2) mm.

3–9;

corollas 3–4 mm, lobes 0.5–0.75 mm.

in ca. 3 series, strongly unequal, outermost 1–2 mm, innermost 3.7–4.7(–5.7) mm, linear-oblong, 1-nerved, apices obtuse to acute.

in 3 series, strongly unequal, broadly lanceolate, acute, glabrous.

25–250, in short axillary and terminal racemiform clusters, lateral panicles (2–)7–31(–56) cm.

35–140, in paniculiform arrays, often about as broad as long, branches recurved-secund, often elongate.

(obconic) 1–2(–3) mm, moderately to densely strigose;

pappi 3–4.5 mm.

(obconic) 1.5–2 mm, glabrous;

pappi 1.5–2 mm.

= 18, 36.

= 18.