Rather infrequent but possibly a little under recorded. Decreasing ?
J F Robinson 1902: "Common. Waste places in chalk pits at Hessle, and on chalky gravelly roads near Hull."
Herbarium material: HLU : Hessle 1929 & 1938 {G A Glister}; Cottingham railway station 1955 {R Good}. HLL : Springhead 1936 {A K Wilson}.
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