Flora of North America species comparison

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

blade margins entire.

not secund, elongated and loose in fruit.

not or somewhat secund, usually dense and compact, sometimes slightly elongated in fruit.

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.

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

valves glabrous inside;

septum complete;

ovules 8–16 per ovary;

style to 7 mm.

yellow.

usually yellow, sometimes cream-yellow, cream-white, or white.

= 10.