# American Mistletoe (*phoradendron leucarpum*) American Mistletoe (Phoradendron leucarpum) is a fascinating hemiparasitic plant native to the eastern and central United States. While it can produce its own energy via photosynthesis, it steals water and vital nutrients from its host trees (primarily hardwoods like oaks and red maples) using specialized root-like structures called haustoria. Famous in winter folklore, this evergreen plant forms distinct, rounded clumps high up in the naked branches of deciduous trees during the colder months, serving as an important ecological resource. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 1 - **Habitat:** Found growing high in the canopy of deciduous trees in temperate forests, woodlands, parks, and suburban areas. ![American Mistletoe](https://inaturalist-open-data.s3.amazonaws.com/photos/250082583/medium.jpg) Photo: Douglas Goldman, CC BY-SA 4.0 · [iNaturalist](https://www.inaturalist.org/photos/250082583) ## Appearance This plant forms conspicuous, rounded woody clumps measuring between 30 and 100 centimeters in diameter, clinging tightly to tree branches. It features thick, leathery, oval-shaped green leaves that are opposite each other along smooth, jointed, bright-green stems. In late autumn and winter, female plants produce clusters of small, sticky, pearl-white berries that are highly attractive to birds. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Magnoliopsida - **Order:** Santalales - **Family:** Santalaceae - **Genus:** Phoradendron ## Interesting facts - Despite being a parasite, mistletoe is considered an ecological keystone species because it provides vital nesting cover and winter food for wildlife. - The berries contain a sticky substance called viscin, which is so strong it can survive a bird's digestive tract to glue seeds onto bark. - The name 'mistletoe' is derived from Anglo-Saxon words meaning 'dung-on-a-twig', referring to how birds leave seeds behind in their droppings. ## Special abilities - **Haustorial Penetration:** Uses specialized root-like structures called haustoria to penetrate host tree bark and absorb water and minerals directly from the tree's xylem. - **Sticky Seed Dispersal:** Produces seeds coated in viscin, an incredibly sticky substance that ensures the seeds adhere firmly to host tree branches after dispersal. - **Evergreen Photosynthesis:** Maintains green leaves year-round, allowing it to photosynthesize even during the winter months when host trees are dormant. ## Measurements & details - **Length:** 30-100 cm - **Weight:** 0.1-3 kg - **Lifespan:** 5-30 years ## Diet & Feeding As a hemiparasite, it obtains water and mineral nutrients from its host tree while producing its own carbohydrates via photosynthesis. - **Age differences:** Germinating seeds rely on stored energy until they successfully penetrate host tissue. - **Primary Foods:** Water, Mineral nutrients, Host tree xylem sap - **Foraging Method:** Parasitic Absorption ## Ecological connections - **Parasite:** [White Oak](https://www.snappit.app/explore/white-oak) (*Quercus alba*) — Acts as a hemiparasite, draining water and nutrients from the tree's branches. - **Eaten by:** [Eastern Bluebird](https://www.snappit.app/explore/eastern-bluebird) (*Sialia sialis*) — Consumes the sticky white berries and subsequently disperses seeds onto new branches. - **Host plant:** Great Purple Hairstreak (*Atlides halesus*) — Provides critical foliage that serves as the exclusive food source for this butterfly's larvae. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify American Mistletoe? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How long is American Mistletoe? 30-100 cm ### How much does American Mistletoe weigh? 0.1-3 kg ### How long does American Mistletoe live? 5-30 years ### What does American Mistletoe eat? As a hemiparasite, it obtains water and mineral nutrients from its host tree while producing its own carbohydrates via photosynthesis. ### Where is American Mistletoe usually found? Found growing high in the canopy of deciduous trees in temperate forests, woodlands, parks, and suburban areas. ### How does American Mistletoe hunt? Parasitic Absorption ## Where to spot - [Bainbridge Commercial Historic District](https://www.snappit.app/guides/places/bainbridge-commercial-historic-district) — Georgia, US · Historic District - [Commerce Street Residential Historic District](https://www.snappit.app/guides/places/commerce-street-residential-historic-district) — Alabama, US · Historic District - [East Commerce Street Historic District](https://www.snappit.app/guides/places/east-commerce-street-historic-district) — Alabama, US · Historic District - [Cairo Historic District](https://www.snappit.app/guides/places/cairo-historic-district) — Illinois, US · Historic District - [Fort Defiance](https://www.snappit.app/guides/places/fort-defiance) — Illinois, US · Historic Site - [Lafayette Square](https://www.snappit.app/guides/places/lafayette-square) — District of Columbia, US · Park [View all places to see American Mistletoe](https://www.snappit.app/guides/where-to-see/american-mistletoe) ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [American Mistletoe: Facts & Places to See — Snappit](https://www.snappit.app/explore/american-mistletoe)