Multiple realities
(covers information from several alternate timelines)
Palm trees near the Great Pyramid
Palm trees over Echo Park Lake
The palm tree was a type of tree native to Earth, typically found in desert climates. (TOS: "The Squire of Gothos")
In one of the clips of ancient time played by the Guardian of Forever, palm trees could be seen near the Great Pyramid of Giza. (TOS: "The City on the Edge of Forever")
Echo Park Lake in Los Angeles, California was overlooked by palm trees. (PIC: "Assimilation")
In an alternate timeline, Commander Charles Tucker III and Sub-Commander T'Pol had their honeymoon in cargo bay 3 of Enterprise NX-01, which Tucker filled with sand they dug up from a passing asteroid and decorated with a palm tree that he had manufactured himself. (ENT: "E²")