Scientific name : "Brassica oleracea" The Brassica oleracea L. var. costata DC plant resembles thick-stemmed collard with large floppy leaves. The leaves are close together, round, smooth, and slightly notched at the margins, and can be eaten... moreScientific name : "Brassica oleracea" The Brassica oleracea L. var. costata DC plant resembles thick-stemmed collard with large floppy leaves. The leaves are close together, round, smooth, and slightly notched at the margins, and can be eaten raw or cooked