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.
Olea europaea - the olive tree is one of the most beautiful trees growing in the Mediterranean. It is suitable for planting in gardens or in containers to give a Mediterranean atmosphere. Their ultimate height and spread is