Flora of North America species comparison

erect, usually reddish, sometimes stramineous, glabrous.

erect, stramineous, glabrous (branched distally).

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 oblong to obovate, 30–50(–80) mm, lengths mostly 2–4 times widths, bases ± clasping, margins dentate (teeth apiculate to setose), apices rounded, faces glabrous, obscurely, if at all, gland-dotted.

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

broadly urceolate, 10–15 × 15–25 mm.

18–27;

laminae 10–15 mm.

25–45;

laminae 10–15+ 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 3–5 series, spreading to appressed, subulate to linear-lanceolate, apices recurved to straight, attenuate, slightly to moderately resinous.

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

borne singly or in open to crowded, 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.

whitish to grayish, 2–4 mm, apices smooth or minutely coronate, faces smooth or striate;

pappi (persistent or tardily falling) of 25–40 barbellate bristles 3–7+ mm subtending 8–15+ barbellate, setiform awns or subulate scales 7–10 mm (the longer surpassing disc corollas).

= 12.

= 12.