Farsetia clypeata.
Botanical name:
Farsetia clypeata R. Br. Cruciferae.
Southern Europe and the Orient. This plant has the same properties as the cresses.
Sturtevant's Edible Plants of the World, 1919, was edited by U. P. Hedrick.
A herbal distance course
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.