Flora of North America species comparison

1, erect (often with purple or purplish brown areas), glabrous or glabrate, sometimes strigillose in leaf axils.

1–5+, ascending to erect, proximally glabrous, distally usually glabrous or sparsely puberulent, rarely densely hirsute.

thin (green to dark green), margins often strigilloso-ciliolate, faces glabrous;

basal withering by flowering, long-petiolate (petiole bases sheathing), sparsely ciliate, blades ovate to oblanceolate, 10–90 × 6–14 mm, bases attenuate to cuneate, rounded, margins entire or serrulate or crenulate, apices rounded, obtuse, or acute;

proximal cauline withering by flowering, petiolate, subpetiolate, or sessile, blades narrowly lanceolate or subulate, 20–100(–200) × 1.5–10(–20) mm, bases attenuate, margins subentire, entire, or serrulate, apices acute to acuminate;

distal sessile, blades narrowly lanceolate to subulate, 5–113 × 0.5–5.5 mm, apices acuminate.

thin, margins entire or often serrate, apices acute, faces glabrous or sparsely puberulent;

basal withering by flowering, petiolate to subpetiolate, blades oblanceolate to narrowly elliptic or linear, 50–150 × 3–25 mm, bases attenuate, margins entire or sometimes serrate, apices acute;

proximalmost cauline withering by flowering, subpetiolate or sessile, blades obovate or oblanceolate to narrowly elliptic, rarely linear, 50–150 × 4–35 mm, bases attenuate or cuneate;

distal sessile, blades 30–100(–130) × 3–15(–30) mm, bases cuneate, rounded or sometimes ± auriculate, margins sometimes serrate, scabrous.

(0.2–)0.5–4 cm, bracts 4–8(–17).

sparsely hairy, bracts 1–10, lance-oblong to linear, sometimes clasping, margins scabrous.

cylindric to turbinate, 5–7(–8.2) mm.

campanulate, 5–8(–10) mm.

16–30(–54) in 1–3 series;

corollas white, pink, or lavender, laminae 1.3–7 × 0.2–1.3 mm.

15–45;

corollas violet, laminae 10–16(–20) × (1–)1.5–2.5 mm.

4–10(–13);

corollas yello, sometimes tinged with purple, 3.4–5.2 mm, throats narrowly funnelform, lobes ± spreading to erect, narrowly triangular, 0.3–0.7 mm, glabrous.

50–75;

corollas yellow becoming reddish, 4–7 mm, lobes triangular, 0.5–1 mm, glabrous.

in 3–5 series, broadly or narrowly lanceolate to subulate, unequal, bases indurate, margins hyaline, often purple-tinged, entire, green zones lanceolate (usually narrow, sometimes broad and covering most of distal portion), apices acute, faces glabrous.

in 4–6 series, appressed or squarrose, oblong or narrowly oblanceolate or linear (outer) to linear (inner), unequal to subequal (outer shorter than or equal to inner, often less than 3 times as long as wide), bases outer indurate less than 1/2 (some foliaceous), inner scarious, margins entire, sometimes ciliate, green zones obovate to elliptic, apices acute to obtuse, faces usually glabrous, rarely sparsely puberulent.

(10–) 30–100(–150), in open, diffuse, paniculiform arrays.

in open, corymbiform, paniculiform, or racemiform arrays, branches 5–30 cm.

light brown to purple, narrowly obovoid to fusiform, sometimes ± compressed, (1.2–)1.5–2.7(–3) mm, 5-nerved, faces sparsely strigillose;

pappi white, (3–)3.5–5.5 mm.

brown or purplish, cylindric to obovoid, not compressed, 2–4 mm, 3–6-nerved, faces hairy;

pappi whitish to tawny or reddish, 4.5–8 mm.

= 48, 64, 80, 96.