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.
Photographer Marianne Kjølner snapped this pair of photographs of a bizarre tree in Denmark - West coast, a very windy place were there isn’t much that can grow. So the tree can only grow where it has shelter.