[3] It grows only on the direct shoreline of the lake, occupying a seven-foot semi-aquatic zone between the high- and low-tide marks.

[3] It is directly impacted by recreational activities on the lake, enduring bombardment by boat wakes, trampling, and construction of docks and other structures.

The inflorescence is a compact raceme of mustardlike flowers with yellow petals each about 3 millimeters long.

[4] High water levels may be beneficial at times, however, since they kill off competing plant species growing on the beaches.

[3] Restoration of this species has been hampered by low seed germination, but recent research has reduced this problem.