(Raf.) Reveal & M. C. Johnst.
Phoradendron leucarpum is a species of mistletoe which is native to the United States and Mexico. Its common names include American mistletoe, eastern mistletoe, hairy mistletoe, oak mistletoe, Pacific mistletoe, or western mistletoe. It is native to Mexico and most parts of the continental United States. It is semiparsitic, living in the branches of trees. The berries are white and 3–6 millimeters (0.12–0.24 in). It has opposite leaves that are leathery and thick.  Ingesting the berries can cause "stomach and intestinal irritation with diarrhea, lowered blood pressure, and slow pulse". This shrub can grow to 1 meter (3.3 ft) by 1 meter (3.3 ft).
Culture and tradition
Phoradendron leucarpum is used in North America as a surrogate for the similar European mistletoe Viscum album, in Christmas decoration and associated traditions (such as "kissing under the mistletoe"), as well as in rituals by modern druids. It is commercially harvested and sold for those purposes.
Phoradendron leucarpum is the state floral emblem for the state of Oklahoma. The state did not have an official flower, leaving mistletoe as the assumed state flower until the Oklahoma Rose was designated as such in 2004.
- illustration by Mary E. Eaton, "Our State Flowers: The Floral Emblems Chosen by the Commonwealths", The National Geographic Magazine, XXXI (June 1917), p. 514.
- "Taxon: Phoradendron leucarpum (Raf.) Reveal & M. C. Johnst.". Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Retrieved 2008-01-14.
- "Phoradendron leucarpum (P. serotinum)". North Carolina State University. Retrieved November 30, 2014.
- "Phoradendron Mistletoe". Jepson Herbarium University of California, Berkeley. Retrieved November 30, 2014.
- "Oak Mistletoe (Phoradendron leucarpum))". Carolina Nature. Retrieved November 30, 2014.
- "Phoradendron leucarpum - (Raf.)Reveal.&M.C.Johnst.". Plants For A Future. Retrieved November 30, 2014.
- "Mistletoe (Phoradendron leucarpum)". Purdue University. Retrieved November 30, 2014.
- "Oklahoma State Symbols". Oklahoma Historical Society. Retrieved November 30, 2014.
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