Flora of North America species comparison

1, erect, simple, straight to slightly flexuous, glabrous or sparsely villosulous proximally, increasingly villosulous distally.

1, erect, simple, straight, proximally glabrous or sparsely villous, distally densely villous.

basal and cauline, margins serrate, scabrous, apices usually acute, sometimes acuminate, mucronate, faces scabrous, abaxial sparsely villous to strigose with hirsute veins, adaxial strigose;

basal and proximal long-petiolate (to 120 mm), petioles not winged (or rarely so), hirsute and ciliate, blades widely ovate to ovate or lanceolate, 80–190 × 50–110 mm, bases usually cordate, subcordate, or rounded, sometimes cuneate;

cauline short-petiolate (to 50 mm) to subpetiolate or sessile (arrays), petioles gradually winged distally, blades ovate to lance-ovate, 20–60 × 8–30 mm, reduced distally, bases rounded to cuneate.

basal and cauline, margins coarsely serrate (proximal) to serrate (distal), strigoso-ciliate, teeth (15–30 per side) mucronulate, apices acuminate, abaxial faces sparsely strigose, long-stipitate-glandular on veins, adaxial sparsely villous, more densely so on veins;

basal withering by flowering, petiolate (55–180 mm), bases sheathing, blades broadly ovate, 55–110 × 48–95 mm, bases cordate (with mostly deep, rectangular sinuses);

cauline petiolate to (distal) subsessile, petioles (4–100 mm) ± winged, ± clasping, blades ovate to broadly lanceolate, 27–135 × 7–112 mm, bases cordate (sinuses narrower) to rounded or cuneate-rounded;

distal (arrays) sessile, ovate to lanceolate, 6–70 × 1–27 mm.

0.4–1.6 cm, villous;

bracts single or a second midway.

sparsely to moderately villous, sparsely glandular;

bracts 0–1, linear.

cylindro-campanulate, 10–13 mm, equaling or longer than pappi.

cylindro-campanulate, 5.5–7.5 mm, equal to or shorter than pappi.

7–15;

corollas whitish to cream-colored, becoming purple, 15–20 × 1–2 mm.

6–12;

corollas white, 10.5–13 × 1.5–2.1 mm.

20–25;

corollas yellow, slightly ampliate, 6.5–8.5 mm, tubes longer than funnelform throats, lobes ± reflexed, lanceolate, 1–1.2 mm.

12–20(–30);

corollas yellow, 5–6.8 mm, slightly ampliate, tubes (3.2–3.8 mm) longer than campanulate throats (1.1–1.9 mm), lobes erect to slightly spreading, lanceolate, (0.9–)1.1–1.5(–1.9) mm.

36–50 in 4–5 series, ovate, elliptic, or lanceolate to linear (outer 3 × 1.5 mm, inner 13 × 0.7 mm), strongly unequal, bases indurate, green zones ± lanceolate to linear along midnerves (inner), 1/4–3/4 width, subapical (rarely outer foliaceous), margins hyaline, erose, ciliate, apices squarrose, acute to long-acuminate (inner hyaline), abaxial faces ± villosulous, adaxial glabrous.

23–32 in 4–5 series, oblong (outer) to lanceolate (inner), strongly unequal, bases indurate, dark green zones in distal 1/4 or less (outer), often confined to narrow strip along midnerves or none (inner), margins narrowly scarious, densely villoso-ciliate, apices ± loose, obtuse to rounded, faces glabrous or sparsely villosulous, sometimes sparsely stipitate-glandular.

4–80 in flat-topped, corymbiform arrays.

15–100+ in flat-topped, corymbiform arrays.

brown, fusiform, ± compressed, 3–4 mm, ribs 7–9, tan, prominent, crowded, faces strigillose;

pappi of cinnamon (sometimes ± clavate) bristles, ± equaling disc corollas.

brown, fusiform to cylindro-obconic, compressed, 3.2–3.7 mm, ribs 6–12, faces glabrous or sparsely strigillose;

pappi of (65–70) orangish to burnt orange (fine, barbellulate, sometimes apically clavellate) bristles 5–6.8 mm, ± equaling disc corolla.

= 54.

= 54.