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.

petioles 5–45 mm;

blades usually 3-foliolate, leaflets usually simple, sometimes ± pinnately lobed, ultimate blades ± lanceolate, 4–9(–12+) cm × (9–)12–35+ mm.

2–4(–6+) cm.

2–5+ cm.

pinkish to white, 9–15+ mm.

12–22+ mm.

40–60+;

corollas ochroleucous to yellow, 2.5–3 mm.

40–80+;

corollas red-brown to purplish, 5–6 mm.

deltate-ovate, 4.5–5.5 mm.

8, ± oblong to lance-oblong, 6–8 mm.

of oblong to linear bractlets 1.5–2+ mm.

of 5–6 oblong bractlets 1.5–5 mm.

narrowly oblong, 1.3–1.8 mm, not winged;

pappi 0.

obovate to oblong, 4–5(–6) mm.

(± mid stem) 1–4(–5+) cm.

(± mid stem) 3–7(–10+) cm.

= 26.

= 26.