Flora of North America species comparison

minutely hirtellous to strigillose and sessile-glandular (winged by decurrent leaf bases).

stipitate- to sessile-glandular (commonly with eglandular but viscid hairs as well), not arachnose.

sessile;

blades usually lanceolate to lance-elliptic (proximal sometimes spatulate or oblanceolate), mostly 5–15 × 1–3(–4) cm, margins shallowly and closely toothed, faces minutely hirtellous to strigillose and sessile-glandular.

petiolate or sessile;

blades (succulent, drying thin) lance-ovate to ovate or ovate-elliptic, mostly 4–15 × 1–7 cm, margins shallowly serrate, faces glabrate to moderately or densely pubescent (hairs crinkly).

hemispheric to cupulate, 4–7 × 8–10 mm.

cylindro-campanulate, 5–6 × 4–8(–10) mm.

white or rose-purple.

pink to rosy or purple.

greenish to cream, ± stipitate-glandular (outer oval-oblong to linear-attenuate).

usually cream, sometimes purplish, minutely sessile-glandular (outer usually also puberulent), sometimes glabrate.

in corymbiform arrays.

in corymbiform arrays (flat-topped to rounded, often layered, sometimes incorporating relatively long, leafy, lateral branches, clusters of heads terminal on branches, some lateral branches nearly equaling or surpassing central portions).

persistent, bristles distinct.

persistent, bristles distinct.

= 20.

= 20.