Uncommon and usually only a few plants in any one place. Possibly decreasing, Crackles (1990) notes its presence on bombed sites in Hull in the 1950s.
J F Robinson 1902: "Near the Humber at Marfleet. Abundant at the Hull docks."
Herbarium material: HLU : Hessle tips 1942 {A K Wilson}. HLL : Saltend 1933 {A K Wilson}. HUM : Anlaby Road, Hull 1891 {J R Waller}.
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