Flora of North America species comparison

all or mostly alternate (proximal usually opposite);

blades deltate-ovate or rhombic to lanceolate, 3–8(–12+) × 2–4(–6+) cm, bases broadly cuneate to ± truncate, margins coarsely toothed to subentire, apices acute to attenuate, faces strigoso-scabrellous to sericeous.

all or mostly alternate (proximal sometimes opposite);

blades lance-elliptic or lanceolate to lance-linear, 10–25+ × 2–8+ cm, bases narrowly cuneate, margins coarsely toothed to subentire, apices attenuate, faces scabrellous.

± hemispheric to saucerlike, 10–20+ mm diam.

± saucerlike, 10–12+ mm diam.

(8–)12–15+;

laminae 8–10(–20+) mm.

(2–)6–8+;

laminae 15–25+ mm.

80–150+;

corollas yellow.

40–60+;

corollas yellow.

12–18+ in 1–2 series, ± erect to spreading, lance-ovate or lance-linear to linear, 6–8+ mm.

8–12+ in 1(–2) series, ± spreading to reflexed, spatulate or lance-linear to linear, 3–8+ mm.

usually borne singly, sometimes 2–3+ in loose, cymiform or corymbiform arrays.

(3–)8–25(–50+) in corymbiform to paniculiform arrays.

dark brown to blackish, narrowly obovate, 3.5–5+ mm, faces ± strigillose;

pappi 0.5–1(–2) mm (0 on ray cypselae).

dark brown to black, oblanceolate to ± orbiculate, 4.5–5 mm, faces sparsely hirtellous to glabrate;

pappi 1.5–2 mm.

= 34.

= 68.