Cochlearia danica, or Danish scurvygrass,<ref name=BSBI07>Template:Cite web</ref> is a flowering plant of the genus Cochlearia in the family Brassicaceae.
A salt-tolerant (normally) coastal plant which is now flourishing along roads and motorways in Europe, especially under the crash barriers in the central reservation. Its success has been attributed to its ability to survive the effects of salts distributed by gritters in winter and its small seeds being spread by the high speed of cars in the fast lane.<ref>Danish scurvy grass thrives in gritted road conditions BBC News Wales, 21 January 2013</ref>
Full of Vitamin C, it gets its name from sailors chewing it to avoid scurvy. The mauve flowers are 4-5mm in diameter.<ref>Danish Scurvy Grass, Plant Identification.co.uk, accessed February 2011</ref>
Cochlearia danica illustrated by E. Hallier 1883 .
Scurvy-grass growing in the central reservation of the A1120 in the UK.
Cochlearia danica, flower
Cochlearia danica growing in its natural habitat, the shingle zone of a marine beach
Cochlearia danica growing at Granton Docks and Harbour, Edinburgh, UK