First record: AR Clapham, 1926
29
Guildenburgh pits, JO Mountford, 1973.
29Y, GMS Easy, 1975.
36
Fen Drayton tip, GMS Easy, 1973.
44
Thriplow tip, GMS Easy, 1973.
Old tip, Thriplow, several plants, AC Leslie, 1978.
45
Near Cherry Hinton, AR Clapham, 13.6.1926, CGE.
Cherry Hinton tip, GMS Easy, 1972; 11.8.1987.
Panton street, Survey1998/9, Oswald et al.,2000.
46
Waste ground 1
m NW of Waterbeach, 483.685, GMS Easy, 8.1970 & 1973.49
Waste pit, Norwood Road, March, 414.980, GMB Smith, 22.7.1969.
49E, GMS Easy, 1974.
56
Burwell tip, GMS Easy, 1972.
58
Ely tip, GMS Easy, 1970.
Verge, Newnham street, Ely, 58K, RM Payne, 10.2001.
64
Cardinals Green, near old railway bridge, AC Leslie, 1982.
66
Kennett gravel pit tip, GMS Easy, 1969.
67
I. ? umbellata hybrid, garden escape, gravel pits, Fordham, 645.708, SM Walters, 1.8.1952, CGE.
76
Kennett gravel pit tip, GMS Easy, 1969.
40
Elm filled canal, GMS Easy, 1972.
