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Lilium philadelphicum, also known as the wood lily, Philadelphia lily, prairie lily or western red lily, is a perennial species of lily native to North America. It is widely distributed in much of Canada from British Columbia to Quebec, and parts of the United States (Northeast and Great Lakes regions plus the Rocky and Appalachian Mountains).
This lily grows to a height of approximately 30 to 90 centimeters, and produces red or orange blooms between June and August.
The wood lily is listed as endangered in Maryland, New Mexico, Tennessee and North Carolina. Its status is "threatened" in Kentucky and Ohio. In Saskatchewan, the flower is protected under the Provincial Emblems and Honours Act, meaning it cannot be picked, uprooted or destroyed in any way.
- Kew World Checklist of Selected Plant Families
- Flora of North America Vol. 26 Page 180 Wood lily, lis de Philadelphie Lilium philadelphicum Linnaeus, Sp. Pl., ed. 2. 1: 435. 1762.
- "PLANTS Profile for lilium Philadelphicum". USDA. Retrieved 2008-07-09.
- Biota of North America Program 2014 county distribution map
- "Plant detail: Lilium philadelphicum". Evergreen. 2008. Retrieved 2008-07-09.
- "Government House Gardens Showcase Western Red Lily". Government of Saskatchewan. 2005-07-21. Retrieved 2008-07-09.
- "Saskatchewan's Provincial Flower". Government of Saskatchewan. Retrieved 2008-07-09.
- "Endangered Plants of North Carolina". North Carolina Natural. February 2000. Retrieved 2008-07-09.
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