About Erysimum ammophilum A.Heller
Erysimum ammophilum A.Heller is a biennial or perennial plant that ranges in height from a few centimeters to over half a meter. It grows from a base clump of long, narrow dark green leaves, and produces one to several erect stems lined with leaves of the same shape. The top of each stem bears a cluster of bright yellow flowers, each flower having four rounded petals. As the stem matures, flowers fall off to leave developing fruits: narrow siliques 2 to 12 centimeters long that project outward from the stem. These fruits contain winged seeds.