The ancient monkey puzzle tree has distinctive spiny leaves and intricate scaly branches. Its unusual features, scientists believe, evolved as a defense against towering, long-necked dinosaurs.

This monkey puzzle tree (Araucaria araucaria) is one of the stranger trees growing in the Smithsonian’s Enid A. Haupt Garden in Washington, D.C. Its triangular leaves, which cover the entire tree, ...

Key to Mizzou Botanic Garden and MU Arboretum’s mission is to feature an expansive selection of plants and trees that will thrive in mid-Missouri’s climate to “inspire, educate and delight visitors.” ...