Flora of North America species comparison

1–5+, loosely erect, densely long-stipitate-glandular.

1–7+, erect, sometimes branched proximally, straight, glabrous proximally, sometimes thinly scabridulous distally.

mostly basal and cauline, basal and proximal cauline tufted, often marcescent; petiolate to sessile (distal), petioles 10–32 mm, bases sheathing;

blades oblanceolate to spatulate, 10–80(–120) × 15(–20) mm, progressively reduced distally, thick, firm, bases ± attenuate, margins entire or irregularly serrate, eciliate, teeth apiculate to ± spinulose, apices obtuse to acute, mucronate-indurate or callous, faces glabrous.

cauline;

proximal reduced, withering by flowering, firm;

sessile;

blades oblong or elliptic-oblong to lanceolate (sometimes narrowly), 40–120 × 5–25 mm, bases ± clasping, sometimes cuneate, main veins ± marked, margins entire, indurate, sparsely to densely scabridulous, apices acute to obtuse, mucronate (margins recurved at apex), faces glabrous.

stipitate-glandular [bracts not observed].

glabrous to sometimes thinly scabridulous or villosulous;

bracts 0–2, foliaceous, margins villose-ciliate or glabrous.

hemispheric-campanulate, 8–12 mm.

campanulate, 6–9 mm.

13–27;

corollas white to lavender, 8–17(–20) × 1.7–2.2(–3) mm.

(8–)10–15(–19);

corollas pale lavender, 8–18 × 0.7–1.3 mm.

29–47;

corollas pale yellow, 5.5–(6–8) mm, barely ampliate, tubes 2.6–2.9 mm, slightly longer than funnelform throats 1.9–2.3 mm, lobes erect to spreading, lanceolate, 0.8–1 mm.

12–32;

corollas yellow turning reddish purple, barely or not ampliate, 6.8–7.5 mm, tubes narrowly cylindric, shorter than funnelform throats, lobes spreading, lanceolate, 0.7–1.3 mm.

in 4–5 series, often partly purplish (especially inner), ± keeled, lanceolate to linear-lanceolate, margins narrowly scarious, erose, sometimes stipitate-glandular (particularly on green parts), green zones 1/2–2/3 distal portions and full width (outer) to less than 1/6 and along midveins (inner), apices acute to long-acuminate, squarrose (outer and mid) to appressed (inner), faces glabrous, stipitate-glandular (green parts).

(15–35) in 4–5 series, keeled or rounded, ovate or oblong (outer) to lanceolate (inner), unequal, membranous, bases indurate, green zones in distal 1/5–1/3 or less (outer), reduced to midnerve or none (inner), margins erose, narrowly scarious, hyaline, sometimes purplish distally (inner), entire to villoso-ciliolate, apices ± appressed, obtuse or acute (outer), often purple and acute or acuminate (inner), sometimes apiculate, faces glabrous.

1–5, borne singly or in ± corymbiform arrays.

2–116+ usually in corymbiform, sometimes in open, paniculiform arrays.

brown, fusiform, slightly compressed, 2.5–3.5 mm, 8–10-nerved, faces ± densely strigillose;

pappi of yellowish bristles ca. 6 mm.

tan to stramineous, fusiform, ± compressed, 3.8–4.8 mm, ribs 7–10 (stramineous), faces glabrous or sparsely strigillose;

pappi of (ca. 37) yellowish to cinnamonish bristles 6.4–7.2 mm.