A perennial, sometimes biennial, herb occurring in a wide range of coastal habitats, including open sand, shingle, cliffs, walls and waste ground; also rarely inland on road verges. Lowland.
pecies sens. lat. +0.31). T. maritimum and T. inodorum were treated as conspecific in the 1962 Atlas. Many older records are, therefore, only referable to the aggregate, but T. maritimum sens. str. now seems to be well recorded and its distribution is probably stable.
Circumpolar Wide-boreal element.
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