Flora of North America species comparison

1, erect (± flexuous, often reddish), glabrous, hairy in lines distally.

1–5+, ascending to erect, glabrous or puberulent.

stiff, margins sparsely serrulate or entire, ± revolute, scabrous, apices acute to acuminate, mucronulate, faces glabrous, sometimes midveins hairy;

basal withering by flowering, long-petiolate, petioles narrowly winged, bases sheathing, blades lanceolate, ca. 20 × 3–5 mm, slightly attenuate to narrowly cuneate;

proximal cauline withering by flowering, sessile or subpetiolate, blades linear-lanceolate to -oblanceolate, 100–200 × 4–8 mm, bases cuneate to attenuate, clasping;

distal sessile, blades linear-lanceolate to linear, 10–110 × 1–7 mm, progressively reduced distally, bases cuneate to rounded, slightly clasping or not, margins entire.

thin, margins entire, apices acute, faces glabrous or puberulent;

basal often withering by flowering, petiolate, blades broadly elliptic to obovate, 5–200 × 10–35 mm, attenuate or cuneate, margins entire, apices acute;

proximalmost cauline sometimes withering by flowering, sessile, blades oblanceolate to obovate, 70–120 × 15–50 mm, bases strongly clasping, enlarged and usually narrowed distally, usually prominently auriculate, margins entire, apices acute;

distal sessile, blades lanceolate to broadly elliptic, 30–110 × 10–30 mm, bases truncate or auriculate, margins entire.

glabrous or ± densely pilose in lines, bracts 1–4, linear, sometimes inrolled distally, clasping, ciliate, distal 1–2 often subtending and surpassing involucres.

sparsely to densely cinereous, bracts lanceolate.

campanulate, 5–8.5 mm.

campanulate, 10–20 mm.

20–35;

corollas dark blue-violet, seldom white, laminae 8–13 × 1–1.5 mm.

25–55;

corollas violet, laminae 10–18 × 1–2 mm.

(18–)23–40;

corollas yellow, 4–6.5 mm, tubes shorter than funnelform throats, lobes lanceolate, 0.8–1 mm.

60–150+;

corollas yellow, 2.5–4 mm, lobes triangular, 0.4–0.5 mm.

in 3–4 series, oblong-lanceolate, subequal, bases indurate 1/3–3/4, margins scarious, erose, hyaline, ciliate proximally, sparsely ciliolate distally, green zones lanceolate to linear, sometimes outer ± foliaceous, apices acuminate to long-acuminate, often foliaceous, mucronate to apiculate, faces glabrous, eglandular.

in 4–5 series, broadly to narrowly lanceolate or oblanceolate (outer) to linear (inner), ± equal or outer slightly exceeding inner, bases outer foliaceous, inner scarious, margins scarious, entire or erose, green zones elliptic to lanceolate, apices acute, faces glabrous or finely hairy.

in elongate, open, narrow, paniculiform or racemiform arrays, branches ascending, short, leafy, branch leaves smaller and reduced distally (heads 1–3 per branch).

borne singly or in often congested, paniculiform arrays, branches 20–30 cm.

tan, obovoid, compressed, ca. 2.2–2.4 mm, 5–6-nerved, faces sparsely strigillose;

pappi pinkish, 7–8 mm.

brown, cylindric to obovoid, not compressed, 3–3.5 mm, 3–6-nerved, faces hairy;

pappi white, 5–9(–11) mm.

= 64, 80.

= 16, 32.