Pumpkin ash (Fraxinus profunda)

Pumpkin ash (Fraxinus profunda), which typically thrives in swamps across the eastern United States, is now critically endangered. The primary cause of its decline is the emerald ash borer (Agrilus planipennis), an invasive beetle whose larvae disrupt the tree's nutrient and water transport systems, leading to tree death. Habitat destruction and alterations in wetland ecosystems further threaten its survival.