Flora of North America species comparison

all or mostly alternate (proximal usually opposite);

blades lance-elliptic to lanceolate or lance-linear, 10–20 × 2–7 cm, bases ± cuneate, margins coarsely toothed to subentire, apices acute, faces ± hirtellous.

all or mostly alternate (proximal sometimes opposite);

blades lance-ovate or lance-elliptic to lance-linear, 5–12(–22+) × 1–6(–12+) cm, sometimes pinnately lobed, bases ± cuneate, ultimate margins usually coarsely toothed to subentire, sometimes sinuate, apices acute, faces ± scabrellous to strigillose.

± saucerlike, 8–10 mm diam.

± obconic to turbinate, 3–5 mm diam.

0.

(1–)2–3(–7);

laminae 3–4(–7+) mm.

40–60+;

corollas ochroleucous to white.

8–12(–15);

corollas ochroleucous or white.

12–15+ in 1–2 series, ± spreading, oblanceolate to linear, 2–5+ mm.

8–12+ in 1–2 series, ± erect, spatulate to oblanceolate, 2.5–5(–7) mm.

8–35+ in corymbiform to paniculiform arrays.

(20–)60–100+ in corymbiform to paniculiform arrays.

dark brown to blackish, obovate, 3–4.5+ mm, faces ± strigillose;

pappi 1–2 mm (sometimes shorter scales between awns).

dark brown to blackish, oblanceolate, 3.5–5+ mm, faces ± scabrellous;

pappi 1.5–3+ mm.

= 34.

= 32, 34.