Many of the larger specimens in Britain are, in fact, two or more trees that have welded themselves together, so that the bark has completely obliterated their fusion.
Lielbritānijā daudzas no lielākajām īvēm patiesībā ir vismaz divi koki, kas saauguši kopā tik cieši, ka miza pilnīgi noslēpj savienojuma vietu.