The term 'Tree with 'HELICOPTER' Seeds' refers to two species of trees, the ELM and the ASH. The ELM is a deciduous tree that is native to Europe, Asia, and North America. It has a vase-shaped crown and its leaves are oval and serrated. The ASH is also a deciduous tree that is native to Europe, Asia, and North America. It has a rounded crown and its leaves are pinnate and have a diamond-shaped base. Both the ELM and the ASH produce seeds that resemble helicopters when they are released from the tree.