Flora of North America species comparison

1–10+, ascending to erect, glabrous or sparsely puberulent.

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

thin, margins entire or sometimes serrate, apices acute;

basal withering by flowering, petiolate, blades narrowly lanceolate, 60–200 × 10–20 mm, attenuate or cuneate, margins usually entire, sometimes serrate, apices acute, faces glabrous or sparsely puberulent;

proximalmost cauline sometimes withering by flowering, sessile, blades narrowly lanceolate, 50–150 × 8–25 mm, bases cuneate, often auriculate, apices acute;

distal sessile, blades linear to narrowly lanceolate, 20–120 × 3–20 mm, bases cuneate, often auriculate, apices acute.

(yellowish to dark green.

sparsely hairy, bracts linear to lanceolate.

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

campanulate, 5–8 mm.

campanulate, 7–10 mm.

20–40;

corollas white to pink, laminae 7–15 × 1–2 mm.

(8–)15–30;

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

35–60+;

corollas yellow, 4.5–5 mm, lobes triangular, 0.5–0.75 mm.

16–38;

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

in 3–5 series, often spreading, oblanceolate (outer) to linear (inner), subequal, outer indurate less than 1/2, bases outer variable, inner scarious, margins entire, scabrous to ciliolate, green zones oblanceolate to elliptic, apices acute to obtuse, often spreading, faces glabrous or sparsely puberulent.

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 racemiform to narrow, paniculiform arrays, branches usually to 10 cm.

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

brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, 1–2-nerved, faces hairy;

pappi white, 5–6 mm.

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.

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.

= 16, 32, 48, 64.

= 10.