Flora of North America species comparison

1–5+, ascending to erect (strict, 0.9–1.7 cm diam., only distal lateral branches developing in larger plants), moderately to densely hispido-strigose, more so proximally, moderately to densely stipitate-glandular, more so distally.

1–50+, ascending to erect (sometimes brown, or reddish to dark brown, often proximally brittle), often short-branched in distal 1/2, sparsely to densely long-hispid and strigose (hairs often broken off, especially proximally), sometimes becoming moderately hairy and densely stipitate-glandular distally (axillary fascicles of leaves often present).

basal and proximal cauline petiolate (petioles 3–7 cm, bases auriculate-clasping), blades ovate or elliptic to oblong, 50–80 × 20–30 mm, margins flat or somewhat undulate, coarsely serrate to serrulate or entire, proximally long-ciliate, apices acute, faces moderately to densely long-hispido-strigose;

distal sessile, blades oblong-lanceolate to lanceolate, 20–40 × 20–30 mm, reduced distally, margins often undulate, coarsely serrate.

generally ascending, congested;

proximal cauline petiolate, blades linear-oblanceolate, (15–)24–42 × (2–)3–6(–8.5) mm, bases cuneate to attenuate, margins flat, entire, strigoso-ciliate, proximally long-hispido-strigose, apices acute, faces sparsely to moderately hispido-strigose and sparsely to moderately stipitate-glandular, or moderately to densely hispido-strigose and eglandular;

distal sessile (bright green to grayish green), blades linear-oblanceolate to narrowly oblanceolate (rarely broader), (9–)16.5–30 × (1.5–)2.2–4.3(–6) mm, usually little reduced distally (often surpassing heads), bases cuneate to attenuate, margins flat, often abundantly long-hispido-strigose along whole, apices acute, sometime mucronulate to white-spinulose, faces sparsely to moderately densely hispido-strigose (2–65 hairs/mm²; hairs often scabrous, ± pustulate), usually eglandular, sometimes sparsely to densely stipitate-glandular.

10–65 mm, sparsely to densely hispido-strigose, densely stipitate-glandular;

bracts 0–3, linear-lanceolate to linear, reduced distally.

2–16 mm, sparsely to densely hispido-strigose, eglandular or sparsely to densely stipitate-glandular;

bracts 1–3, proximal linear-oblanceolate to oblanceolate, sometimes little reduced distally, leaflike.

campanulo-hemispheric, 6–9 mm.

cylindro-turbinate to narrowly campanulate, (4.5–)5.5–8(–11) mm.

20–40;

laminae 5–8 × 1–2 mm.

10–24(–36);

laminae (5–)7–11.5(–16.5) × 0.7–1.5(–2.1) mm.

30–75;

corollas 4–6 mm, lobes 0.5–0.8 mm.

(12–) 23–55(–70);

corollas slightly ampliate, 4.5–7 mm, throats glabrous, lobes 0.4–0.9 mm, lobes sparsely pilose (hairs on lobes 0.1–0.25 mm).

in 4–6 series, linear-lanceolate, unequal, margins scarious, faces strigose, densely stipitate-glandular.

in 5–6 series, unequal (outer 1/5–1/4 length of inner), narrowly triangular-lanceolate to lanceolate, margins scarious, faces sparsely to moderately strigose, sparsely to densely stipitate-glandular.

10–110+, in corymbiform arrays, becoming paniculiform with age, branches ascending, usually relatively short compared to plant height.

(1–)2–16(–30), in corymbiform arrays, branches ascending.

dimorphic, (ray) 2–5 mm, faces glabrous or slightly strigose on angles, (disc) 4–6 mm, faces moderately to densely strigose;

pappi 0 (ray) or (disc) stramineous to rusty brown, outer bristles 0.4–0.7 mm, inner 6–9 mm, longest weakly clavate.

monomorphic, obconic, compressed, 1.5–2.5(–3) mm, ribs 6–10 (sometimes brownish), faces sparsely to moderately strigose;

pappi off-white, outer of linear scales 0.25–0.5 mm, inner of 25–40 bristles (4–)5–6.5(–7.5) mm, longest weakly clavate.

= 18.

= 18, 36.