Trillium albidum

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Trillium albidum
Trillium albidum 2.jpg
Mendocino County, California
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Liliales
Family: Melanthiaceae
Genus: Trillium
Species: T. albidum
Binomial name
Trillium albidum
J. D. Freeman, 1975
  • Trillium parviflorum V.G.Soukup (syn of Trillium albidum subsp. parviflorum)

Trillium albidum, known by the common names giant white wakerobin,[2] white toadshade, and sweet trillium, is a species of flowering plant endemic to the western United States, native from northern California through Oregon to Washington.

It occurs in forests, woodlands, scrub, and chaparral habitat, becoming common in some areas.[3][4][5]


Trillium albidum is a rhizomatous perennial herb with one or more erect stems growing 20 to 70 centimetres (7.9 to 27.6 in) ers in height. There is a whorl of three large leaves generally described as bracts,[3] each measuring up to 20 centimeters in length. They are green and mottled with brownish or darker green spots.

Each stem produces one flower, which is held on top of the bracts. The fragrant flower has three lance-shaped green sepals and three wider white or pink- or purple-tinged petals measuring up to 11 centimetres (4.3 in) long.


Named varieties include: [1]

  • Trillium albidum subsp. albidum — north west-central California, + southwestern Oregon
  • Trillium albidum subsp. parviflorum (V.G.Soukup) K.L.Chambers & S.C.MeyersWashington, northwestern Oregon


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