Common nipplewort (Lapsana communis) is common in arable fields, woodland margins, hedgerows and wasteland. It thrives on disturbed soil.
The closed flower buds resemble nipples hence the English name “nipplewort”. Under the doctrine of signatures it was once used as treatment for breast ulcers
The young leaves are edible, and can be steamed or used as a salad leaf, although we have yet to try this having only just discovered it (late summer) in Froghopper Clearing.