American mistletoe is a semi-parasitic plant native to North America, commonly found in trees like oaks and maples. It has green, leathery leaves and produces white berries that are toxic to humans but provide food for birds. This plant is often associated with holiday traditions, particularly during Christmas, when people hang it in doorways. The custom of kissing under the mistletoe dates back to ancient times, symbolizing peace and goodwill. American mistletoe plays a role in its ecosystem, supporting various wildlife while also being a popular decorative element during the festive season.