Flora of North America species comparison

1–3+, decumbent to ascending (curved or straight, sometimes stout, green to reddish brown), glabrous.

(dark green to bluish green) thin, apices acute to acuminate, mucronate, faces glabrate or glabrous;

basal withering by flowering (vernal rosettes developed at flowering), petiolate or sessile (petioles winged, sheathing, ciliate), blades oblanceolate to obovate, 10–70 × 3–5 mm, bases cuneate to attenuate, margins entire or rarely sparsely serrate distally, apices obtuse to rounded, cuspidate;

proximal cauline usually withering by flowering, petiolate or sessile (petioles narrowly winged, bases ± clasping), blades oblanceolate to linear-oblanceolate, 70–105 × 2–4 cm, bases attenuate to cuneate, or ± auriculate, ± clasping;

distal sessile, blades linear-lanceolate to narrowly subulate, 5–65 × 1–4 mm, progressively reduced distally, bases subauriculate, ± clasping, margins entire, with marginal cilia proximally, faces glabrous; reduced array leaves often in fascicles along branches, markedly 3-nerved.

0.4–2 cm, mostly borne on secondary branches, glabrous, bracts 3–6, linear to subulate, stiff, distalmost sometimes surpassing involucres, glabrous.

cylindric, (4.5–)5.5–7.1(–8.5) mm.

(13–)20–28(–34);

corollas usually blue-violet, rarely white, laminae (7–)9–15(–19) × 0.6–2.1 mm.

(28–)33–51(–68);

corollas yellow turning brown, 3.4–4.6(–5.5) mm, tubes shorter than funnelform throats, lobes lanceolate, 0.5–1 mm.

in 4–6 series, oblong-lanceolate to -oblanceolate to sometimes linear (innermost), unequal to subequal, bases indurate 1/4–2/3, margins narrowly scarious, erose, hyaline, sometimes sparsely ciliolate, green zones diamond-shaped to lanceolate, apices acute to long-acuminate, involute, spreading, mucronate to apiculate, faces glabrous.

in leafy, paniculiform to racemiform arrays, branches nearly divaricate to ascending, straight, sometimes secund, secondarily ramified, leafy with array leaves ± stiff, asscending to appressed.

tan to brown, obovoid, ± compressed, 1.5–2.1 mm, 4–5-nerved (thin), faces sparsely strigillose;

pappi white, 3–5 mm.

= 64.