"... ' is widely spread over the north temperate and colder regions of the . In Great Britain it is a common plant, being found in the whole of 's 112 counties, ... whilst its altitudinal range is from the coast to some 2,700 above sea-level.... Itself a characteristic plant of the drier parts of marshes and s, ... the habitat of ' is usually where the is considerable rather than excessive. It prefers soils with a high water capacity, such as or . Provided that its needs in respect to soil moisture are satisfied, it will grow almost anywhere: at the edges of marshes and rivers; in the damper parts of meadows; in roadside ditches; on the sea-coast; ... in damp hollows between sand-dunes; ... and even in woods, if the shade is not too dense. ... It readily colonizes moist ground which has been recently disturbed; and hence frequently establishes itself at the foot of railway embankments, &c."