Flora of North America species comparison

1–3+, ascending to erect (sometimes purple or purplish brown), glabrous or glabrate, sparsely hairy in leaf axils [villous to sericeous].

1–5+, ascending to erect, strigose, villous, or lanate, especially distally.

thin, apices callous-pointed, faces glabrous or glabrate;

basal usually withering by flowering, long-petiolate, petioles sheathing, sparsely ciliate, blades lanceolate, 40–110 × (3–)5–7 mm, bases attenuate, margins entire to crenulate, rarely with 1–2 teeth, apices obtuse to rounded, callus-pointed;

proximalmost cauline sometimes withering by flowering, winged-petiolate or sessile distally, blades lanceolate to linear-lanceolate, 50–120(–180) × 1–6 mm, bases attenuate, margins entire, sparsely ciliate, apices acute;

distal sessile, blades subulate to lanceolate, 10–50 × 1–2 mm, bases clasping, apices acuminate.

(grayish green) thin to firm, margins entire, apices acute, faces strigose;

basal withering by flowering, petiolate, blades narrowly oblanceolate, 50–100(–150) × 4–12(–15) mm, bases attenuate, margins scabrous to ciliate;

proximalmost cauline often withering by flowering (often with tufts of leaves in axils), sessile, blades linear to narrowly oblong, 30–70(–100) × 4–8(–10) mm, bases attenuate or cuneate, apices acute;

distal sessile, blades 15–80 × 2–8(–10) mm, bases cuneate, sometimes auriculate.

1–4(–6) cm, ascending, glabrate, bracts 1–4(–5), subulate to lanceolate, foliaceous.

densely short-strigose, bracts 1–6, linear-oblong, strigose.

cylindric to hemispheric, (4.5–)5–7.3 mm.

campanulate, 4–7 mm.

14–27;

corollas white, laminae (4.6–)5.6–7(–9.5)–10.3 × 1.3–2 mm.

15–40;

corollas pale violet, laminae 8–12(–15) × 1–1.5(–2) mm.

18–35(–42);

corollas yellow, 3.5–5 mm, tubes shorter than funnelform throats (hairy), lobes± spreading, triangular, 0.5–0.7 mm.

25–70+;

corollas yellow, 4–6 mm, lobes triangular, 0.4–0.8 mm.

in 2–3(–5) series, subulate to lanceolate, bases indurate, margins hyaline, entire to erose, often ciliate, green zones linear-lanceolate (outer) or rhombic (inner), apices acute, faces glabrous [sparsely villous].

in 3–6 series, narrowly oblanceolate or linear (outer) to linear (inner), unequal, bases indurate, margins entire, narrowly scarious, ciliate, green zones obovate to elliptic, apices obtuse, mucronulate, faces usually strigose.

(1–)3–20(–40), in paniculiform arrays, branches patent.

(3–50+) in narrowly paniculiform arrays, branches 2–10(–20) cm.

light brown to gray, narrowly obovoid to fusiform, sometimes ± compressed, 2–3 mm, 5-nerved, faces glabrate to sparsely strigillose;

pappi white to cream, 3.5–5.5 mm.

brown, cylindric to obovoid, not compressed, 1.5–3 mm, ribs 5–8, faces hairy;

pappi whitish, 4–6 mm.

= 10.

= 36.