Flora of North America species comparison

1, erect, simple, flexuous, glabrate to sparsely puberulent proximally, densely puberulent distally.

1–3+, erect, straight, proximally glabrous, distally sometimes sparsely strigose, stipitate-glandular.

basal and cauline, thin, margins sharply serrate, teeth (6–15 per side) mucronulate, ciliate, apices acuminate, abaxial faces sparsely strigose or villous, particularly villous along veins, adaxial glabrescent to sparsely strigose, veins sparsely stipitate-glandular;

basal and proximal withering by flowering, petiolate (petioles 20–70 mm), blades ovate, 19–65 × 17–60 mm, basal smaller than proximal, bases cordate (sinuses narrow, curved);

cauline petiolate, petioles often ± winged (15–70 mm), blades ovate, 20–200 × 10–100 mm, bases cordate to rounded;

distal (arrays) usually sessile, sometimes subpetiolate, blades ovate to lanceolate, 5–20 × 1–8 mm, bases rounded.

basal and cauline, firm, margins slightly revolute, crenate-serrate, scabrous, apices acuminate and mucronate, abaxial faces usually glabrescent to ± scabrous, sometimes ± sparsely strigose, gland-dotted or stipitate-glandular, adaxial sparsely puberulent, stipitate-glandular (increasingly so distally);

basal withering by flowering, long-petiolate, petioles slightly winged, bases dilated and sheathing, sparsely ciliate, ± glandular, blades ovate to elliptic-ovate, 70–120 × 40–65 mm, bases rounded to sometimes slightly oblique;

proximal cauline long-petiolate, petioles shorter and gradually more broadly winged distally, blades ovate to elliptic-ovate, 55–100 × 24–65 mm, gradually reduced distally;

distal winged-petiolate to subpetiolate or sessile, blades ovate or elliptic to lanceolate or oblanceolate, 10–64 × 3–18 mm, gradually reduced distally, bases ± clasping, margins becoming entire (arrays).

to 1.5 cm, densely hairy, eglandular;

bracts 0(–2).

firm, straight, 0.4–3.5 cm, sparsely strigose, densely stipitate-glandular;

bracts 0–3, oblong-lanceolate, 3–5 mm, acute, densely stipitate-glandular.

cylindro-campanulate, 4.2–6 mm, much shorter than pappi.

campanulate, (6–)7–11 mm, shorter than pappi.

5–10(–12);

corollas white, 6–12 × 1.5–2.2 mm.

10–11;

corollas ± purple, 13.1–13.5 × 1.6–2 mm.

12–19(–25);

corollas yellow, 4.1–4.8(–5.5) mm, abruptly ampliate, tubes (2.3–2.6 mm) longer than campanulate throats (0.9–1.2 mm), lobes reflexed, lanceolate, 0.7–1.4 mm.

25–40;

corollas cream or light yellow, becoming pinkish, 7.6–8.5 mm, slightly ampliate, tubes longer than narrowly funnelform-campanulate throats, lobes erect, lanceolate-acuminate, 0.9–1.4 mm.

25–30 in 4–5 series, inner purplish distally, oblong (outer) to lanceolate or linear-lanceolate (inner), strongly unequal, bases indurate, green zones in distal 1/2 (outer) to 1/3 or along distal midveins (inner), margins narrowly scarious, densely fimbriate-ciliate, apices rounded to acute, faces sparsely hairy, sometimes sparsely stipitate-glandular;

outer 0.7–1.5 mm wide, lengths seldom more than 2.5 times widths.

(18–)25–40 in (4–)5–6 series, appressed, lanceolate (outer) or lance-ovate to oblong or linear-oblong (inner; innermost longer than 7 mm), strongly unequal, bases indurate, rounded adaxially, dark-green zones obovate to lanceolate (inner), ca. 1/3 distal portion, margins hyaline or often purplish (inner), scarious, erose, ± ciliate, apices (at least some) reflexed, ± squarrose, or twisted, rounded to obtuse (outer) or acute (inner), abaxial faces stipitate-glandular.

4–50(–100+) in ± flat-topped corymbiform arrays.

(3–)8–19+ in open, corymbiform arrays.

brown, cylindro-obovoid, slightly compressed, 2.6–3.8 mm, ribs 7–10 (tan to stramineous), faces sparsely strigillose;

pappi of reddish to cream-colored (fine, barbellulate, sometimes apically ± clavate) bristles 3.7–5 mm, equaling or longer than disc corollas.

dark reddish brown, cylindro-fusiform, compressed, ca. 3 mm (sterile or undeveloped), ribs [not seen], faces strigillose;

pappi of tawny, (sometimes apically ± clavate) bristles 7.6–8+ mm, equaling disc corollas.

= 18.

= 72.