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

± saucerlike, 8–10 mm diam.

± saucerlike, 10–12+ mm diam.

0.

(2–)6–8+;

laminae 15–25+ mm.

40–60+;

corollas ochroleucous to white.

40–60+;

corollas yellow.

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

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

8–35+ in corymbiform to paniculiform arrays.

(3–)8–25(–50+) 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 black, oblanceolate to ± orbiculate, 4.5–5 mm, faces sparsely hirtellous to glabrate;

pappi 1.5–2 mm.

= 34.

= 68.