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.

basal and cauline on proximal 1/5–1/3(–1/2) of plant heights;

petioles 1–8+ cm;

blades simple or 1(–2)-pinnately lobed, simple blades or terminal lobes ± elliptic to lanceolate, 10–30 × 5–15 mm.

2–4(–6+) cm.

(5–)10–25+ cm.

pinkish to white, 9–15+ mm.

yellow, usually each with (2–)4–8+ proximal, red-brown or purple flecks, 12–18+ mm.

40–60+;

corollas ochroleucous to yellow, 2.5–3 mm.

2.5–3.2 mm, apices yellow.

deltate-ovate, 4.5–5.5 mm.

lance-oblong, 6–8(–10+) mm.

of oblong to linear bractlets 1.5–2+ mm.

of ± deltate to lance-oblong bractlets 4–6(–8) mm.

narrowly oblong, 1.3–1.8 mm, not winged;

pappi 0.

2.5–4 mm, wings spreading, ± chartaceous, entire.

(± mid stem) 1–4(–5+) cm.

nodes proximal to first peduncle usually 1–3(–5), distalmost 1–3 internodes 2–4(–9+) cm.

= 26.

= 12, 14, 18, 20.