Lepidium heterophyllum Smith's-cress C DD N
This plant is present in most of England and Southern Scotland where its heaviest concentrations are to be found in the west. In Ireland it prefers the eastern coast and hardly occurs at all in the west. It must be quite long lived because I found this specific site twenty years ago and, revisiting it in the vague hope that it still might be there, found the plant in exactly the same spot. It is also known as Smith's Cress.
Grass verge outside Pistyll, Lleyn peninsula, North Wales 25th July 2005
Added on November 5th 2005, updated 26th July 2010, updated 16th Nov 2014