Flora of North America species comparison

blades oblong to obovate, mostly 30–55+ × 15–30+ mm, mostly 2–3-pinnately lobed, ultimate margins dentate.

blades oblong to obovate or spatulate, 25–65+ × 8–25+ mm, coarsely 1-pinnate or not lobed, ultimate margins dentate or entire.

pale yellow, sometimes white-tipped, laminae oblong to linear, 15–25 mm.

golden yellow, laminae oblong-ovate, 8–20 mm.

triquetrous, 2.5–3 mm, angles ± winged, faces obscurely nerved or ribbed;

disc cypselae ± prismatic, ± compressed, 2.5–3 mm, obscurely ribbed, sometimes with adaxial (rarely the abaxial) rib ± winged.

weakly triquetrous, 2.5–3 mm, obscurely, if at all, winged, lateral faces 2-ribbed, abaxial faces 3-ribbed;

disc cypselae ± compressed-columnar, 2–3 mm, 10-ribbed, not winged.

= 18.

= 18.