Lilium superbum

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Turk's cap lily
Lilium superbum in the Great Smoky Mountains National Park, North Carolina
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Liliales
Family: Liliaceae
Genus: Lilium
Species: L. superbum
Binomial name
Lilium superbum

Lilium superbum is a species of true lily native to the eastern and central regions of North America.[1][2][3] Common names include Turk's cap lily,[1] turban lily, swamp lily,[4] lily royal,[4] or American tiger lily.[2] The species is native from New Hampshire south to Florida and west to Missouri and Arkansas.[1]


Lilium superbum grows from 3–7 feet (0.91–2.13 m) high with typically three to seven blooms, but exceptional specimens have been observed with up to 40 flowers on each stem.[2] It is capable of growing in wet conditions.[5] It is fairly variable in size, form, and color.[2] The color is known to range from a deep yellow to orange to a reddish-orange "flame" coloring with reddish petal tips.[2] The flowers have a green star at their center that can be used to distinguish L. superbum from the Asiatic "tigerlilies" that frequently escape from cultivation.[3]


The roots were a food source for Native Americans, and the flowers provide nectar for hummingbirds and larger insects.[6][7]


It is listed as endangered in Florida and New Hampshire, threatened in Kentucky, and exploitably vulnerable in New York.[1]


The common name is derived from the reflexed shape of the flower petals, which presumably resemble a type of hat worn by early Turkish people.[8]