Ragged Robin
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Lychnis flos-cuculi
Still fairly common, although declining in some areas.
Blooming from May to August (and occasionally later), the pink flowers are 3 to 4 cm (1.2 to 1.6 in) wide.
They have five narrow petals deeply divided into four lobes giving the flower an untidy, ragged appearance, hence its common name.
The calyx tube is five-toothed with ten stamens.
There are 5 separate styles.
The fruits consist of small (6 to 10 mm) capsules opening on top by five teeth and containing many small seeds; they are found on the plants from August onward.