A common roadside weed throughout the Mediterranean, this quite variable plant does actually look exactly like the ones I see growing in the British Isles. The plant in the top left with the striped calyx looks like Silene nicaensis.

LHS: Lake District, Andalucia 27th March, Spain RHS: El Burgo River valley Spain 31st March 2007

Added on 8th January 2009, updated 29th March 2010, updated 22nd June 2014