Flora of North America species comparison

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

petioles 0–1 mm (or 5–25+ mm, winged, and scarcely distinct from blades);

blades not 3-foliolate, most with 3(–5+), ± oblong to linear lobes (5–)15–40+ × 2–3(–7+) mm (sometimes some leaves not lobed).

5–15(–30+) cm.

1–4+ cm.

(5–)8(–12+);

laminae 7–10(–15+) mm.

15–25+ mm.

20–60(–100+);

corollas 2–3.6 mm.

60–80+;

corollas yellow (sometimes drying blackish), 5–6.5 mm.

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

8, ± oblong to nearly orbiculate, 6–10 mm.

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

of 9–12+ oblong to lanceolate bractlets 3–9+ mm.

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

oblong, 5–6 mm.

(± mid stem) 25–50 mm.

= 24.

= 26.