Flora of North America species comparison

blade margins sinuate or lobed, or, sometimes, lyrate.

blade margins ± entire, (sometimes slightly lobed or widened at base).

not secund, elongated and loose in fruit.

not secund, loose and elongated in fruit, or dense in alpine forms.

usually sigmoid.

usually sigmoid.

slightly wider than long, apex truncate or retuse;

valves pubescent inside;

septum fenestrate;

ovules 4–6 per ovary;

style to 9 mm.

slightly wider than long, apex truncate or retuse;

valves pubescent inside;

septum ± perforate;

ovules 4(–8) per ovary;

style to 7(–9) mm.

yellow.

yellow.

= 10.