Flora of North America species comparison

blade margins entire.

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

secund, usually elongated and loose in fruit.

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

curved (recurved) or slightly sigmoid.

usually sigmoid.

as wide as or longer than wide, apex rounded-acute;

valves glabrous inside;

septum ± perforate;

ovules 4(–8) per ovary;

style 3–6 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.