Flora of North America species comparison

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

1–5+, erect, simple, ± flexuous distally (± ridged from decurrent leaf bases), glabrate proximally, sparsely villous distally.

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.

basal and cauline (grayish green abaxially), bases often oblique, margins serrate, veins prominent, abaxial faces scabrous, adaxial hirsute;

basal and proximal cauline withering by flowering (rosettes produced in late season, absent in spring), short-petiolate, petioles winged, sheathing, blades ovate-lanceolate, 40–130 × 20–90 mm, bases rounded to subcordate, apices obtuse to acute;

mid short-petiolate, narrowly winged, wings revolute, bases dilated, sheathing, ciliate, blades ovate to lance-ovate, 100–120(–150) × (30–)60–80 mm, gradually reduced distally, bases shallowly cordate or truncate to rounded, margins sharply serrate, teeth mucronate, apices acuminate;

distal (arrays) subpetiolate or sessile, ovate, 8–70 × 4–23 mm, bases sheathing or clasping.

sparsely to moderately villous, sparsely glandular;

bracts 0–1, linear.

0.5–3(–5) cm, villous;

bracts 0–3.

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

campanulate, 6–8(–10) mm, much shorter than pappi.

6–12;

corollas white, 10.5–13 × 1.5–2.1 mm.

(12–)15–20;

corollas white, sometimes becoming pink or lavender, 12–18 × 1–2.5 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.

25–35+;

corollas cream or light yellow becoming purple, 6–7(–8) mm, slightly ampliate, tubes cylindric, lengths about twice funnelform throats, lobes erect, lanceolate, 0.8–1.2 mm (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.

ca. 40 in 5 series, oblong (outer) to linear-lanceolate (inner), strongly unequal, membranous, bases indurate and low-keeled or rounded abaxially, green zones in distal 1/4–1/3, obovate, poorly defined, margins hyaline, scarious, villoso-ciliate, inner often purplish, apices appressed, obtuse to rounded, faces villous, eglandular.

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

4–32+ in flat-topped, corymbiform arrays.

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.

brown, fusiform, (2.5–)3–3.5(–4) mm, ribs 8–10(–12), crowded, stramineous to tan, faces ± strigillose;

pappi of tawny (apically sometimes clavellate) bristles 6–7 mm, equaling or slightly shorter than disc corollas.

= 54.

= 18.