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Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Liliales
Family: Liliaceae
Genus: Trillium
  Trillium albidum
  T. angustipetalum
  T. catesbaei
  T. cernuum
  T. chloropetalum
  T. cuneatum
  T. decipiens
  T. decumbens
  T. discolor
  T. erectum
  T. flexipes
  T. foetidissimum
  T. gracile
  T. grandiflorum
  T. kurabayashii
  T. lancifolium
  T. ludovicianum
  T. luteum
  T. maculatum
  T. nivale
  T. ovatum
  T. parviflorum
  T. persistens
  T. petiolatum
  T. pusillum
  T. recurvatum
  T. reliquum
  T. rivale
  T. rugelii
  T. sessile
  T. simile
  T. stamineum
  T. sulcatum
  T. texanum
  T. underwoodii
  T. undulatum
  T. vaseyi
  T. viride
  T. viridescens
Reference: [1]
as of 2003-01-08

Trilliums (also Wakerobins) are a member of the Trilliaceae or Trillium family, a part of the Liliales or Lily order.

This attractive wildflower has many species. In the east of North America, the most common is Trillium grandiflorum (large-flowered trillium). This plant has a large, often white, three-petaled flower above three broad leaves. Along with its three sepals, it's easy to see where trillium got its name, which it was given by Linnaeus. Trillium grandiflorum is often the first wildflower noticed by casual walkers; other spring wildflowers are much less apparent.

In western North America, a typical species is Trillium ovatum (Western Trillium) also with white flowers.

Trillium ovatum
Photo Credit: Bureau of Land Management/photo by John Craig

While trillium flowers are very attractive, they should never be picked, since the three leaves below the flower are the plant's only food source and a picked trillium may die or take many years to recover. For this reason in many areas, e.g. British Columbia, Washington, Oregon, and New York, it is illegal to pick trilliums.

Trillium is one the flowers whose seeds are spread by ants.

A white trillium serves as the emblem of the Canadian province of Ontario.

Information about Trilliaceae added by sfarmer