Winterberry (Ilex verticillata) is a deciduous holly that gets it name from the red berries which persist on its stems into winter after the leaves have fallen. It's often found in moister environments.
very bright red berries
By Boardwalk over swamp
Defining characteristics: bright red berries still present in late fall, shrub growth form
Ilex verticillata, the winterberry, is a species of holly native to eastern North America in the United States and southeast Canada, from Newfoundland west to Ontario and Minnesota, and south to Alabama.