Flora of North America species comparison

blades simple or 1(–2)-pinnately lobed, terminal lobes filiform, 0.5–1(–1.5) mm wide.

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.

5–15(–30+) cm.

2–4(–6+) cm.

(5–)8(–12+);

laminae 7–10(–15+) mm.

pinkish to white, 9–15+ mm.

20–60(–100+);

corollas 2–3.6 mm.

40–60+;

corollas ochroleucous to yellow, 2.5–3 mm.

5–8, obovate to oblanceolate, 4–6(–7+) mm.

deltate-ovate, 4.5–5.5 mm.

of (3–)5–8 linear bractlets 3–7+ mm, not ciliolate near bases.

of oblong to linear bractlets 1.5–2+ mm.

± oblong, (2.5–)3–4+ mm, marked adaxially with red dots or dashes, wings corky-thickened, faces ± tuberculate and/or hirtellous.

narrowly oblong, 1.3–1.8 mm, not winged;

pappi 0.

(± mid stem) 1–4(–5+) cm.

= 24.

= 26.