Flora of North America species comparison

erect, usually reddish, sometimes stramineous, glabrous.

erect, stramineous, glabrous.

blades spatulate or oblanceolate to oblong or lanceolate, 15–70 mm, lengths 3–5(–7) times widths, bases ± cuneate or clasping, margins usually dentate or serrate (teeth apiculate), sometimes entire, apices rounded or obtuse to acute, faces glabrous (or, near margins, scabridulous) and sparsely to densely gland-dotted.

blades obovate or oblong to spatulate, (5–)10–15(–30) mm, lengths 2–2.5(–5) times widths, bases ± clasping, margins crenate (teeth usually 7–9, sometimes 3–6, per cm, rounded to blunt, usually resin-tipped), apices obtuse to acute, faces glabrous, moderately gland-dotted.

broadly urceolate to globose, 8–11 × 10–20 mm.

broadly urceolate, 7–10 × 8–16 mm.

18–27;

laminae 10–15 mm.

20–30;

laminae 7–9 mm.

in 5–6 series, linear or lanceolate to oblong-lanceolate, apices looped to hooked (outer) or recurved to nearly straight, terete to subulate or acuminate, slightly to moderately resinous.

in 4–5 series, reflexed to spreading, ± lanceolate, apices recurved to nearly straight, subulate to acuminate, moderately to strongly resinous.

usually in open, corymbiform to paniculiform arrays, seldom borne singly.

in open, paniculiform arrays or borne singly.

whitish or stramineous, 2.5–5 mm, apices smooth or weakly coronate, faces smooth or finely furrowed;

pappi of 4–8 straight, barbellate to barbellulate bristles or setiform awns 2.5–5.5 mm, shorter than disc corollas.

brown, 1.5–3 mm, apices smooth or coronate, faces rugose;

pappi of 2–3 straight, smooth or barbellulate (distally dilated), setiform awns 4–6 mm, shorter than or nearly equaling disc corollas.

= 12.

= 12 (Mexico).