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Observed: 23rd May 2013 By: anonymous spotter
Added: 24th May 2013
Growing in a dune-slack. Stiff stem, 4 angled and marked with spots / streaks. Leaves opposite, unstalked, lanceolated, with rounded teeth. Flower yellow, 2 lipped with tiny violet teeth on the upper lip. Inflated calyx in which seeds rattle around when dry – hence its name.