It is a short biennial plant with elliptical to lanceolate leaves. The flowers are purplish bells between 12 and 22 mm long. It flowers between July and September. Its habitat is in grass, often on lime-rich soil (in England typically on chalk). It is found throughout Northern Europe.
- "Lardon Chase" (PDF). Natural England. Retrieved 2016-02-02.
- Fitter, Richard; Fitter, Alastair; Blamey, Marjorie (1974). The Wild Flowers of Britain and Northern Europe. Collins. p. 182.
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