Flora of North America species comparison

proximal blades usually 1(–3)-pinnate, terminal lobes lance-ovate to oblanceolate, 10–60 × 5–25 mm;

cauline blades usually 1–2(–3)-pinnate, rarely simple, simple blades or terminal lobes lance-linear to linear or filiform, 10–45 × 0.5–2(–5+) mm.

petioles 0–1 mm;

blades usually 3-foliolate, simple blades or leaflets entire or each ± pedately lobed with 2–5+, ± oblong to linear lobes 15–30+ × 1–1.5(–2.5+) mm.

1–5(–15+) cm.

2–5(–8+) cm.

usually yellow with red-brown blotch, sometimes red-brown in proximal 1/3–9/10 and distally yellow, rarely yellow throughout, 12–18+ mm.

10–20+ mm.

2.5–3+ mm.

30–45+;

corollas yellow (sometimes drying blackish) or purple, 3–4 mm.

± lance-oblong to lance-ovate, 4–7(–9) mm.

8, lance-ovate to oblong, 4–5 mm.

of deltate-lanceolate bractlets 1–3+ mm.

of 8 oblong to linear bractlets 1.5–3+ mm.

1.5–3(–4+) mm, wings 0 or 0.1–0.7+ mm wide;

pappi 0, or of 1–2 cusps or subulate scales 0.1–1+ mm.

obovate to oblong, 4–5 mm.

(± mid stem) 8–12(–16) mm.

= 24 (+ 0–2 Bs).

= 26.