Flora of North America species comparison

1–5+, sparsely to moderately short strigose or villous.

1–5(–10), ascending to erect (tall stems sometimes arching), branching proximal to arrays only in damaged stems, glabrous.

basal withering by flowering, petiolate, smaller to much smaller than cauline, blades oblanceolate, margins serrate;

cauline sessile, blades elliptic-lanceolate or -oblanceolate, mid 80–140 × 2.5–4 mm, distally reduced, usually membranous, bases tapering, attenuate, margins sharply toothed along much of length to nearly entire, ciliate, abaxial faces short-pilose along small and large nerves, adaxial short-pilose along larger nerves.

basal subsessile to winged-petiolate, petioles of proximalmost nearly completely sheathing stems, blades oblanceolate to elliptic-lanceolate, 60–600 × 3–20(–50) mm, thick and firm, obtuse to rounded, bases tapering, margins entire or obscurely serrate, glabrous;

proximal to distal cauline sessile, ascending to nearly appressed, lanceolate-oblong to linear, 10–30 × 2–4 mm, abruptly reduced proximally, then gradually so distally, margins entire, apices acute, faces glabrous.

1–6 mm, moderately canescent;

bracteoles linear to lanceolate.

slender, 2–10 mm, glabrous or sparsely strigillose;

bracteoles linear.

campanulate, 4.5–5.5 mm.

narrowly campanulate, 4–6 mm.

6–8;

laminae 3–4 × 1–1.5 mm wide.

3–7, 1.5–2 × ca. 0.5 mm.

8–14;

corollas 4–5 mm, lobes ca. 1.5 mm.

usually 8–12;

corollas 3–5 mm, lobes 1–1.2 mm.

in ca. 3 series, strongly unequal, erect to slightly squarrose-tipped, lanceolate, apices acute, glabrate, sparsely to moderately, finely stipitate-glandular.

in 3–4 series, oblong, unequal, acute to rounded, glabrous.

5–160 (2–10+ more per short branch cluster), in narrowly elongate paniculiform arrays, branches usually 1–6 cm (much longer in damaged plants, sometimes 1–3 proximal branches much elongated in undamaged plants), ascending and bearing short terminal racemiform or paniculiform clusters.

15–250, sometimes secund on proximal branches and secund terminus, in linear, narrowly elongate paniculiform to elongate pyramidal-secund or thyrsiform-paniculiform and not secund arrays, sometimes with a few elongate proximal, arching branches.

(reddish brown) 2–3 mm, glabrous;

pappi 4–5 mm.

1.5–2.5 mm, sparsely to moderately strigose;

pappi 3 mm.