Flora of North America species comparison

erect, usually reddish, sometimes stramineous, glabrous.

erect, whitish, stramineous, or reddish, usually glabrous, rarely sparsely pilose near bases.

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 triangular, ovate, or oblong to lanceolate or linear, 25–60(–110) mm, lengths 3–12 times widths, bases cuneate or ± clasping, margins usually serrate to dentate (teeth apiculate to setose), rarely entire, apices acute to acuminate, faces usually glabrous (or, near margins, scabridulous, rarely puberulous) and usually not, rarely notably, gland-dotted.

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

broadly urceolate to globose, 8–15 × 10–20+ mm.

18–27;

laminae 10–15 mm.

12–36;

laminae 10–16 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(–9) series, weakly spreading to appressed, filiform to linear or lanceolate, apices slightly recurved or straight to incurved, terete, slightly to moderately resinous.

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

usually in corymbiform arrays, rarely 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.

stramineous to grayish, 2–6 mm, apices coronate or knobby, faces smooth or striate;

pappi of 2 straight, smooth (apices often dilated), setiform awns 4–8 mm, usually equaling to slightly surpassing disc corollas.

= 12.

= 12.