Flora of North America species comparison

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

1–3+, erect (straight, brittle), glabrate.

thin, margins entire or sometimes serrate, apices acute to obtuse, faces usually glabrous, sometimes sparsely hairy;

basal usually persistent, petiolate to subpetiolate, blades broadly elliptic to obovate, 30–200 × 8–25(–30) mm, bases attenuate, margins entire or sometimes serrate, apices acute to obtuse;

proximal cauline sessile or subpetiolate, blades elliptic to obovate, 35–120 × 8–25 mm, bases attenuate or cuneate to rounded, sometimes ± clasping, apices acute;

distal sessile, reduced distally, bases cuneate, apices acute.

thin, margins ciliate, abaxial faces glabrous or glabrate, adaxial sparsely strigose;

basal withering by flowering (new rosettes developing at flowering), sessile, blades lanceolate to oblanceolate or spatulate, 20–40+ × 3–5+ mm, bases attenuate, margins sparsely serrate to subentire, strigose-ciliate, apices acute to obtuse;

proximal cauline usually withering by flowering, sessile, blades linear-oblanceolate, ca. 30 × 2 mm, bases tapering, margins entire, scabrous, apices acute;

distal sometimes withering by flowering, sessile, blades linear, 10–30 × 1.5–5 mm, reduced distally, bases cuneate or not tapering, margins entire, apices acute, ± mucronulate.

sparsely hairy, bracts 0–3, lanceolate.

long, gradually reduced distally on branches, glabrous or glabrate, bracts 3–17+, linear, mucronate.

campanulate, 6–16(–20) mm.

cylindro-campanulate, (3.2–) 3.4–4 (–4.3) mm.

15–60;

corollas violet to purple, laminae 8–18(–20) × 1–2 mm.

7–14;

corollas usually white, seldom pink, laminae (3–)3.8–5.4(–6.2) × 0.5–1.1 mm.

50–150;

corollas yellow, 4–7 mm, lobes triangular, 0.4–1 mm.

7–17;

corollas yellow becoming brown, (2.2–)2.5–2.9(–3.1) mm, tubes shorter than narrowly funnelform throats, lobes lanceolate, 0.3–0.6(–0.9) mm.

in 4–6 series, oblanceolate or oblong (outer) to lanceolate or linear (inner), subequal or unequal (outer exceeding inner), bases outer foliaceous, inner indurate, margins entire, green zones elliptic to lanceolate, apices acute to rounded, faces glabrous or puberulent.

in 3–5 series, oblong-lanceolate, unequal, bases indurate 1/2–3/4, margins narrowly scarious, slightly or not erose, sparsely ciliolate or not distally, green zones lanceolate, apices acute, involute, slightly spreading, faces glabrous.

borne singly or in paniculiform arrays, branches ascending, up to 25 cm.

in open, wide, paniculiform arrays, branches arching, sometimes ± secund, abundantly bracteate.

brown, cylindric to obovoid, not compressed, 2.5–4 mm, 3–4-nerved, faces hairy;

pappi white to tawny, 5–8 mm.

yellowish brown, obovoid, ± compressed, ± 1.2–1.3 mm, 3–4-nerved, faces sparsely to moderately strigillose;

pappi white (yellowish), 2.4–3.3 mm.

= 16.