I think ribwort plantain (Plantago lanceolata) is probably the most common flowering plant to be found in Dorset. There are species very common in certain habitats, daisies in my lawn for example, but ribwort can be found just about anywhere and everywhere and in good numbers too.
In my days of leading walks I found some people were surprised that ribwort plantain was truly a flower, it being far from the typical flowering plant. It has a tall stem with a single brown, clustered flowering body at the top surrounded by a dispersed ring of white stamens. The leaves are also tall and thin (lanceolate) with ribs running the length of them; it is not hard to see how its name comes about.
As with many common herbs of the countryside ribwort plantain has been used as a herbal remedy for many ailments but it is thought that a tea made from the leaves is an effective cough medicine.Ribwort Plantain: take your medicine