Flora of North America species comparison

all or mostly opposite (distal sometimes alternate);

blades ± ovate or lance-deltate to lanceolate, 6–12(–16+) × 3–6(–10+) cm, bases ± cuneate, margins coarsely toothed to subentire, apices usually acute to attenuate, sometimes rounded, faces scabrellous.

all or mostly opposite (distal sometimes alternate);

blades ± deltate to rhombic, 3–8+ × 2–5+ cm, bases ± cuneate, margins raggedly toothed, apices obtuse to acute, faces strigoso-sericeous.

campanulate to turbinate, 3–5+ mm diam.

shallowly bowl-shaped, 15–25+ mm diam.

(0–)1–3(–5);

laminae 10–15(–20+) mm.

12–16+;

laminae 10–12+ mm.

8–15+;

corollas yellow.

80–150+;

corollas yellow to orange.

8–12+ in 2 series, ± erect, spatulate to oblanceolate, 3–7+ mm.

28–35+ in 2–3 series, ± erect, linear to lanceolate, 8–12+ mm.

20–100+ in corymbiform-paniculiform arrays.

borne singly or 2–3 together.

dark brown to black, oblanceolate, 5 mm, faces strigose;

pappi 3–4 mm.

blackish, ± elliptic, 6.5–8 mm, faces ± strigillose;

pappi 0.5–1+ mm.

= 34.

= 68.