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 oblanceolate or lanceolate to linear, 25–40(–60) mm (distal smaller, ± appressed), lengths mostly 4–6 times widths, bases ± clasping, margins ± crenate (teeth mostly 9–15 per cm, rounded to obtuse or blunt, resin-tipped), apices acute to acuminate, faces glabrous, little, if at all, gland-dotted.

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

broadly urceolate, 8–14 × 10–20+ mm.

18–27;

laminae 10–15 mm.

17–26;

laminae 10–12 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 5–6 series, slightly spreading to appressed, linear to lance-attenuate or lanceolate, apices incurved to straight, filiform to subulate, slightly resinous.

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

borne singly or in open, corymbiform arrays.

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.

stramineous to reddish brown, 2–3+ mm, apices coronate to knobby, faces striate or furrowed;

pappi of 2–4 straight, barbellulate or smooth (apices slightly dilated), setiform awns 3–4.5 mm, shorter than to nearly equaling disc corollas.

= 12.

= 12.