The term 'Endangered Tree' can be summarized by the crossword solution ELM, which stands for the tree species of the same name. The ELM tree is a deciduous tree native to Europe, Asia, and North America, and is known for its distinctive vase-shaped crown and its ability to thrive in a variety of climates. Unfortunately, the ELM tree has been heavily impacted by Dutch ELM Disease, a fungal infection that has caused the species to become endangered in many parts of the world.