Galathilion
From Tolkien Gateway
Galathilion, the White Tree made by Yavanna for the Elves of the city of Tirion and a descendant of Telperion although it gave no light.
It grew in a high open courtyard beneath the Tower of Ingwë.
From it came Celeborn, the White Tree of Tol Eressëa; through which it became the ancestor of Nimloth of Númenor and the White Tree of Minas Tirith.