Black walnut (Juglans nigra) is a tree native to the eastern half of the United States. It is commonly grown for its lumber, but the nuts are also quite popular. It is also host to over a hundred caterpillar species, making it extremely important for biodiversity while also managing to be a tasty source of food for humans.
Map Source:
https://plants.usda.gov/core/profile?symbol=JUNI
Photo Credit:
https://commons.wikimedia.org/w/index.php?curid=1073230