Flora of North America species comparison

1–3+, erect (sometimes brown proximally, strict to straight), glabrous.

green to dark green, firm, ± fleshy, margins entire, ciliate, apices acute, callous, faces sparsely strigillose;

basal persistent or petiole bases marcescent, long-petiolate (to 15 cm; petioles sheathing, margins glabrous), blades linear to linear-lanceolate, 10–30 × 2–7 mm, bases cuneate to subattenuate, margins sparsely denticulate or entire, indurate-translucent;

proximal cauline persistent, sessile or subpetiolate, blades linear, 42–105 × 1–3 mm, bases clasping, margins often revolute;

distal sessile, blades usually linear, sometimes awl-shaped, 50–180 × 5–10 mm, strongly reduced distally, more abruptly so on array branches, bases subclasping to adnate for 1/2+ length, margins often revolute.

1–20+ cm, slender, glabrous, bracts 4–22, linear (awl-shaped), grading into phyllaries.

cylindro-campanulate, 5.5–9 mm.

8–23;

corollas purple to blue-lavender, laminae (10–)14–15(–20) × 0.8–2.2 mm.

47–57;

corollas pale yellow, 4.7–6.3 mm, throats funnelform to narrowly campanulate, lobes triangular, 0.5–0.7 mm (proximally sparsely pilose).

in 4–5(–6) series, oblong-lanceolate (outer) to linear-lanceolate (innermost), bases indurate (at least inner), margins scarious, hyaline, purplish distally, ciliolate, green zones narrowly lanceolate, not evident, apices purplish, acute (outer) to acuminate (inner), sometimes mucronate (inner), faces sparsely villous.

in open, usually corymbiform, sometimes ± paniculiform arrays, branches ascending, simple, slender, elongate.

tan to gray-brown (nerves stramineous), obovoid, compressed, 3.1–4.5 mm, 8–10(–14)-nerved, faces glabrous;

pappi yellowish, 4.4–4.7 mm.

= 14.