Usually found as small colonies on waste ground but occasionally it may dominate untended arable land - e.g. [TA 03 27] in 2000.
J F Robinson 1902: "Frequent ... Hull docks."
Herbarium material: HLU : Thwaite Hall, Cottingham 1950 {R Good}. HLL : King George Dock, Hull 1932 {A K Wilson}.
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