Flora of North America species comparison

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.

all or mostly opposite (distal sometimes alternate);

blades ovate-deltate or ovate to lance-ovate, 2–6 × 1–5 cm, bases rounded to cuneate, margins toothed to entire, apices obtuse to acute, faces ± scabrellous.

± saucerlike, 10–12+ mm diam.

± hemispheric, 15–22+ mm diam.

(2–)6–8+;

laminae 15–25+ mm.

± 13;

laminae 25 mm.

40–60+;

corollas yellow.

80–120+;

corollas yellow.

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

24–30+ in 3–4 series, ± erect, oblong, orbiculate, or ovate, 5–12+ mm.

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

borne singly.

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

pappi 1.5–2 mm.

dark brown, narrowly elliptic, 7 mm, faces glabrous;

pappi 0–0.5 mm.

= 68.

= 34.