Flora of North America species comparison

bases soft to hard, herbaceous, often hollow.

bases soft, herbaceous, hollow.

blades of mid cauline spatulate or oblong to obovate or lanceolate, 6–35 × 1–15 cm, bases auriculate, auricles deltate to lanceolate, ± straight, acute, margins usually pinnately (often runcinately) lobed, lobes ± deltate to lanceolate, not constricted at bases, terminals usually larger than laterals, entire or dentate.

blades of mid cauline spatulate or oblong to obovate or lanceolate, 6–30 × 1–15 cm, bases auriculate, auricles often recurved or curled, rounded, margins often pinnately lobed, lobes ± deltate (not constricted at bases), terminals usually larger than laterals, usually prickly-dentate.

usually glabrous, sometimes stipitate-glandular.

usually stipitate-glandular, sometimes glabrous.

9–13+ mm.

9–13+ mm.

ligules ± equaling tubes.

ligules mostly shorter than tubes.

usually glabrous, sometimes tomentose and/or stipitate-glandular.

usually stipitate-glandular.

dark brown, mostly oblanceoloid, 2.5–3.5+ mm, ribs 2–4 on each face, faces transversely rugulose or tuberculate across and between ribs;

pappi 5–8 mm.

stramineous to reddish brown, mostly ellipsoid, strongly compressed, ± winged, 2–3 mm, ribs 3(–5) on each face, faces smooth across and between ribs;

pappi 6–9 mm.

= 32, 36.

= 18.