Cucumber tree - found only on Socotra Island, Yemen. The island is very isolated and through the process of speciation, a third of its plant life is found nowhere else on the planet. It has been described as the most alien-looking place on Earth.
Madagascar, Baobab trees Baobab trees only have leaves about months out of the year, the rest of the time they store water inside their trunk. These beautiful African trees live for hundreds of years. This is on my "BUCKET LIST'.