Flora of North America species comparison

1–5+, erect (straight to ± flexuous distally, often reddish, sometimes brown), usually glabrous, sometimes ± pilose, particularly distally.

1–5+, erect (stout, light to dark brown, sometimes purplish distally), proximally sparsely to moderately hispiduloso-hirsute or pilose, distally moderately to densely so, stipitate-glandular.

thin, margins serrate (often sharply, teeth acuminate, mucronulate) to serrate-crenate or subentire, strigose, apices acuminate to acute, mucronulate, abaxial faces glabrous or sparsely to densely strigose-pilose, often pilose on midveins, sometimes on other veins also, adaxial glabrous or sparsely to densely strigose, sometimes ± scabrous;

basal withering by flowering, new vernal rosettes often present, long-petiolate (petioles ± narrowly winged, bases dilated, sheathing, ciliate), blades ovate to elliptic or suborbiculate, (10–)35–150 × (10–)25–75 mm, bases usually deeply cordate, sometimes rounded, margins coarsely, often irregularly serrate, apices sometimes obtuse or rounded;

proximal cauline often withering by flowering, winged-petiolate (becoming shorter and more widely winged distally, petiole bases clasping), blades widely to narrowly ovate, 40–100(–140) × 20–40(–70) mm, reduced distally, bases ± deeply cordate to rounded, margins sharply serrate, apices acuminate;

distal usually sessile or subsessile, rarely short-petiolate, blades ovate to lanceolate, 5–105 × 2–45 mm, bases cordate or rounded to attenuate or cuneate, margins serrate or entire (distalmost), apices acuminate.

(light to dark green) thin, often stiff, margins entire or sometimes with shallow teeth, ciliate;

basal withered or withering by flowering, sessile, blades (3-nerved) usually spatulate, sometimes oblanceolate, 20–60 × 5–15 mm, bases attenuate, apices acute, faces sparsely hirsute;

proximal cauline withering by flowering, sessile, blades oblong or lanceolate, 50–100 × 5–15(–20) mm, bases auriculate-clasping, margins entire, pustulate-scabrous, apices acute, mucronulate, faces stipitate-glandular, abaxial thinly strigose, adaxial hirsute or hispidulous;

distal sessile, blades oblanceolate, 30–80 × 6–15 mm, gradually reduced distally, bases auriculate-clasping, apices acute to obtuse, mucronate to minutely white-spinulose, faces moderately to densely short-soft-hairy, sparsely to moderately stipitate-glandular.

0.3–2 cm, ± pilose, bracts linear-oblanceolate or -lanceolate to linear, foliaceous, distally grading into phyllaries, margins sparsely ciliolate, glabrous.

dilated distally, 0.3–4 cm, densely short-hairy, stipitate-glandular, bracts 1–4, foliaceous, linear to narrowly lanceolate, densely short-hairy, stipitate-glandular, grading into phyllaries.

cylindro-campanulate to cylindric, (3–)4.5–5(–6) mm.

campanulate to hemispheric, (5–)7–9(–15) mm.

(8–)10–16(–20);

corollas usually blue to purple, seldom whitish or pink, laminae (5–)6–8(–10) × 1.4–1.8 mm.

(40–)50–75(-100);

corollas dark rose to deep purple (pale pink or white), laminae 9–13 × 0.8–1.3 mm.

(8–)10–15(–20);

corollas cream-color or light yellow becoming purple, (3–)4–4.5(–5) mm, tubes slightly shorter than funnelform throats, lobes sometimes ± spreading, narrowly triangular to lanceolate, 0.6–0.9 mm.

50–110;

corollas light yellow becoming purple, (4–)4.5–5.5(–7) mm, tubes ± 1/2 narrowly funnelform throats (glabrous or thinly puberulent), lobes triangular, 0.4–0.7 mm.

in (3–)4–6 series, linear-lanceolate to oblong-lanceolate, unequal, bases indurate 1/2–3/4, margins scarious, erose, hyaline, sparsely ciliolate, green zones lanceolate to ± diamond-shaped, apical, apices (often red-tipped) acute to obtuse-acuminate or acuminate, mucronulate, faces glabrous or sparsely strigillose.

in 3–5(–6) series (dark green to purple-tinged), linear-lanceolate, subequal, outer foliaceous, mid and inner scarious in basal 1/3–1/2, margins stipitate-glandular, apices long-acuminate to acuminate, spreading to reflexed or squarrose, faces glabrous, outer densely stipitate-glandular.

[(5–)20–300+] in ± densely paniculiform arrays, branches divaricate to ascending, paniculiform, sometimes ± long-arching, leafy.

in leafy, often crowded, paniculo-corymbiform arrays.

dull purple or light brown, obovoid, ± compressed, 2–2.5 mm, 4–5-nerved, faces glabrous;

pappi white or ± rose-tinged, 2.5–4.5 mm.

dull purple or brown, oblong or obconic, not compressed, 1.8–2.5(–3) × 0.6–1 mm, 7–10-nerved, faces densely sericeous, sparsely stipitate-glandular;

pappi tawny (barb tips sometimes rose-tinged), 4.5–6 mm.

= 16, 32.

= 10.