Lilium philadelphicum

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Wood lily
Lilium philadelphicum var. philadelphicum.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Liliales
Family: Liliaceae
Genus: Lilium
Species: L. philadelphicum
Binomial name
Lilium philadelphicum
  • Lilium andinum Nutt.
  • Lilium masseyi Hyams
  • Lilium montanum A.Nelson
  • Lilium lanceolatum T.J.Fitzp.
  • Lilium umbellatum Pursh
  • Lilium wansharicum Duch.

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.[2] 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).[3][4]


This lily grows to a height of approximately 30 to 90 centimeters, and produces red or orange blooms between June and August.[5]

A variant of the species, the western red lily (L. philadelphicum andinum) was designated Saskatchewan's floral emblem in 1941.[6][7] It is featured on the flag of Saskatchewan.


The wood lily is listed as endangered in Maryland, New Mexico, Tennessee and North Carolina.[3][8] Its status is "threatened" in Kentucky and Ohio.[3] In Saskatchewan, the flower is protected under the Provincial Emblems and Honours Act, meaning it cannot be picked, uprooted or destroyed in any way.[6]