Populus trichocarpa Torrey & A Gray ex Hook.
'Balsam Spire' ('Tacatricho 32'; P. trichocarpa Torrey & A Gray ex Hook. x P. baslamifera L.)
First record: GMS Easy, MJ O'Leary, 1987.
45
Wasteground, old railway, Long Road, GMS Easy, 1987.
Hedge on north side of A.1303, Madingley Road, 436.591, well naturalized in hedge, seedlings derived from a row of mature trees planted just behind hedge in Churchill College, MJ O'Leary, 15.9.1987.
46
'Balsam Spire', Old railway west of Milton Road, 46-61-, GMS Easy, 6.2001.
57
Suckers on verge, Tower Road, Ely, 57J, RM Payne, 2001-2002.
