Bladder Campion

Just by the Eastern entrance to the Serpentine Walk from Lower Largo there is a stand of bladder campion (Silene vulgaris). In most British campions the sepals are joined to form a straight or slightly bulging tube, but in the bladder campion this tube is inflated like a balloon. and it is this feature which gives the plant its common name.

Above photo showing the inflated net-veined calyx tube, which the red campion below does not have.