Rheum x hybridum Murray (R. rhaponticum auct. non L. x R. palmatum L., R. rhabarum auct., non L.; R. undulatum auct., non L.; R. x cultorum Thorsrud & Reisaeter nom. nud.)
First record: H Gilbert Carter, DH Valentine & EF Warburg, 1940
34
34R, GMS Easy, 1972-1977.
36
Fen Drayton, L Farrell, 28.5.1991, [R].
44
Hedge, Fowlmere, 426.458, JO Mountford. 5.7.1969.
45
Barnwell old railway line, GMS Easy, 1977.
Old railway, Trumpington, GMS Easy, 1987.
46
R. undulatum L. Chesterton Ballast pits, 1 clump, H Gilbert Carter, DH Valentine & EF Warburg, det. H Gilbert Carter, 1940.
Chesterton railway sidings, GMS Easy, 1999.
Impington, 46Q, 1 plant in a copse, J Bevan, 1992, [R].
49
49E, GMS Easy, 1972-1977.
57
Ditchbank by A.142 near Ely, 550.788, AC Leslie, 15.9.1984.
58
Adelaide-Prickwillow railway, GMS Easy, 1975.
40
Old railway track by Isle of Ely College, Wisbech, 469.091, JO Mountford & GMB Smith, 22.7.1969.
