Cochlearia pyrenaica Pyrenean Scurvygrass
In spite of its name this species is native in the British Isles as well as being common here in the Pyrenees. Like all Cochlearia species, unless you know that other similar ones do not grow in the area, a careful examination of basal leaves and stem leaves plus other features is necessary to be sure of a correct identification.
Cirque de Troumouse, French Pyrenees, 8th June 2009
Added on 2nd December 2009, corrected 13th Dec 09, updated 19th March 2010