Flora of North America species comparison

1–8+, erect (purplish to brown, slender), villous, more densely so distally, distally moderately stipitate-glandular.

1–5+, ascending to erect (light to dark brown), proximally glabrous, distally strigose, stipitate-glandular.

(yellowish to dark green.

(light green) firm, margins entire, scabrous;

basal sometimes persistent, sessile, blades (1–3-nerved) linear-oblanceolate, 10–30 × 4–10 mm, bases attenuate, apices obtuse, mucronate, faces glabrate to sparsely scabrous;

proximal cauline withering by flowering, sessile, blades (3-nerved) narrowly oblanceolate, 20–80 × 2–8 mm, bases cuneate, apices obtuse to acute, mucronulate or white-spinulose, faces glabrous or moderately short-strigose, stipitate-glandular;

distal sessile, blades linear-oblanceolate to -lanceolate or oblong (distally), 20–50 × 2–5 mm, ± reduced distally, bases ± clasping to cuneate, apices acute, mucronulate, faces glabrous or moderately short-strigose, stipitate-glandular.

± densely short-villous, ± densely stipitate-glandular, bracts 1–3, foliaceous, reduced.

sparsely to moderately short-strigose, moderately stipitate-glandular, bracts ± ascending, linear to narrowly-lanceolate.

campanulate, 7–10 mm.

campanulate to cylindro-campanulate, 5.5–8 mm.

(8–)15–30;

corollas purple to blue, laminae 5–11 × 0.5–2 mm.

15–31;

corollas violet, laminae (5–)6–15 × 1–2 mm.

16–38;

corollas yellow becoming brown, 4–6.5 mm, lobes triangular, 0.4–0.8 mm.

25–40;

corollas yellow, 4.5–6 mm, lobes triangular, 0.4–0.8 mm.

in 3–4(–5) series, linear-lanceolate, subequal, bases scarious, margins hyaline or purplish, scarious, erose, ciliate or short-stipitate-glandular, green zones herbaceous at least distally, often purplish to purple, apices long-acuminate, spreading to reflexed, faces ± densely villous (outer more so), ± densely stipitate-glandular.

in 3–4 series, linear to lanceolate, subequal to unequal, bases ± indurate, margins scarious, green zones covering distal portion, apices acute to acuminate, outer ± foliaceous, spreading to reflexed, faces glabrate, sparsely to densely stipitate-glandular.

usually borne singly, sometimes in open, corymbo-paniculiform arrays, branches ascending.

1–10(–30), borne singly or in paniculiform arrays, branches ascending.

brown (sometimes purplish, nerves stramineous), narrowly obovoid, ± compressed, ca. 3 mm, 7–10-nerved, faces sparsely to moderately sericeo-strigose;

pappi sordid (barb tips sometimes purplish-tinged), 3.5–4.8 mm.

light brown, sometimes translucent reddish brown between ribs, narrowly obovoid, ± compressed, 2–2.5 mm, 3–4-nerved (faint), moderately strigose on ribs;

pappi tawny, 3.8–6 mm.

purplish, often prominent) thin, reduced distally, margins entire;

basal withering by flowering, winged-petiolate to subpetiolate (petioles ± sheathing), blades narrowly oblanceolate, 8–15 × 1–3 mm, bases attenuate, margins scabrous, apices obtuse to acute, faces glabrous or glabrate;

proximal cauline often withering by flowering, sessile or subsessile, blades linear-oblanceolate, 20–70 × 1–4 mm, bases ± clasping, margins ciliate, apices acute, abaxial faces glabrous or midnerve ± sparsely villous, adaxial glabrous or sparsely villous, midnerves ± villous;

distal sessile, blades linear-lanceolate, 10–30 × 1–2.5 mm, bases ± subclasping, ± rounded to subauriculate, margins sometimes stipitate-glandular, apices acute, mucronate or white-spinulose, faces glabrous or sparsely villous, short-stipitate-glandular.

= 10.

= 10.