Flora of North America species comparison

1–5+, ascending to erect (straight, slender, 1–2.5(–3) mm diam.), glabrous.

1–5+, ascending to erect, densely puberulent to lanate, especially distally.

thin, margins scabrous to scabrellous or eciliate, apices mucronulate, faces glabrous;

basal persistent or withering by flowering, petiolate (petioles slightly winged, sheathing), blades spatulate to elliptic or oblanceolate, 10–40 × 5–11 mm, bases cuneate to attenuate, margins crenate-serrate, apices obtuse to acute;

proximal cauline persistent or withering by flowering, ± broadly winged-petiolate or sessile, blades oblong, lanceolate or elliptic-lanceolate to oblanceolate, or linear-lanceolate, 20–100 × 3–9 mm, bases attenuate to cuneate, slightly clasping, margins serrulate or entire;

distal sessile, blades oblanceolate to linear-lanceolate or linear, 10–60 × 1–7 mm, gradually reduced distally, bases cuneate to tapering, margins serrulate or entire, apices acute to acuminate.

thin, margins entire, apices acute, faces densely lanate-puberulent;

basal often withering by flowering, subpetiolate, blades oblanceolate, 15–50 × 5–20 mm, bases cuneate, margins entire, apices acute, faces densely lanate;

proximal cauline sessile or subpetiolate, blades oblanceolate, 50–150 × 10–25 mm, bases slightly clasping, rarely auriculate;

distal sessile, blades lanceolate, 30–100 × 10–20 mm, reduced distally, bases tapered, ± auriculate, apices acute.

ascending, 0.2–2.5+ cm, glabrous, bracts 1–4, subulate to linear.

densely cinereous to lanate, bracts 0–3, lanceolate to narrowly ovate.

cylindro-campanulate, 3.3–4.5(–5) mm.

campanulate, 7–9 mm.

14–27;

corollas white, laminae 4.3–8.2 × 0.7–0.8 mm.

20–35;

corollas violet, laminae 12–20 × 1–2 mm.

20–30;

corollas pale yellow becoming purplish, 3–4.1 mm, tubes shorter to nearly equaling funnelform throats, lobes lanceolate, 0.5–1 mm.

35–70;

corollas yellow, 5–6.5 mm, lobes triangular, 0.5–1 mm.

in 4–5 series oblong-lancoelate (outer) to linear-lanceolate (inner) or linear (innermost), unequal, bases indurate 1/2+, margins scarious, erose, hyaline, ciliolate, green zones lanceolate, apices acute to acuminate or caudate, mucronulate or apiculate, sometimes purplish, faces glabous.

in 4–5(–6) series, squarrose, oblong to oblanceolate, unequal, bases of outer indurate less than 1/3, margins entire, green zones oblong-linear to oblanceolate, apices acute or obtuse (sometimes minutely mucronate), faces densely puberulent to lanate.

{(10–)25–100} in paniculiform arrays, branches ascending (1–10 heads per branch).

in corymbiform to paniculiform arrays, branches to 20 cm.

tan (nerves stramineous), obovoid, ± compressed, 3.5–4 mm, 4–5-nerved, faces strigillose;

pappi white, 3–3.6 mm.

brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, 4–5-nerved, faces hairy;

pappi whitish, 5–7 mm.

= 16, 32.

= 32.