Flora of North America species comparison

mostly cauline; opposite;

petioles 0–1 mm, ciliate or not;

blades lance-linear to linear or filiform, 20–45(–60) × 1–2(–3+) mm, rarely with 1–2 lateral lobes.

blades simple or 1(–2)-pinnately lobed, terminal lobes spatulate to narrowly oblanceolate, 1–3 mm wide.

2–4(–6+) cm.

5–12(–20+) cm.

5–8;

laminae 8–12(–15+) mm.

pinkish to white, 9–15+ mm.

40–60+;

corollas ochroleucous to yellow, 2.5–3 mm.

12–30+;

corollas 2.5–3.5 mm.

deltate-ovate, 4.5–5.5 mm.

(5–)8, ovate to lance-ovate, 4–5(–7) mm.

of oblong to linear bractlets 1.5–2+ mm.

of 5–7+ oblong to linear bractlets 4–8(–10) mm, ciliolate near bases.

narrowly oblong, 1.3–1.8 mm, not winged;

pappi 0.

± obovate, 4–5 mm, not marked adaxially with red, wings corky-thickened, faces smooth or ± tuberculate, not hirtellous.

(± mid stem) 1–4(–5+) cm.

= 26.

= 24.