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-ovate to lanceolate, 5–12+ × 2–5+ cm, bases ± cuneate, margins ± toothed, apices acute to attenuate, faces strigose to sericeous.

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

± hemispheric, 10–15+ mm diam.

(8–)12–15+;

laminae 8–10(–20+) mm.

8–13+;

laminae 20–25(–30+) mm.

80–150+;

corollas yellow.

40–80+;

corollas yellow.

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

16–21+ in 2–3 series, ± erect, lanceolate, 6–9+ mm.

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

2–5(–10+) in ± corymbiform 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 elliptic, 5 mm, faces strigillose to glabrate;

pappi 0.5–1.5 mm.

= 34.

= 34.