Trillium albidum, known by the common names giant white wakerobin, white toadshade, and sweet trillium, is a species of flowering plant native to the northwestern United States from Washington to central California. It occurs in forests, woodlands, scrub, and chaparral habitat, becoming common in some areas. Varieties * Trillium albidum subsp. albidum - California, west-central + southwestern Oregon * Trillium albidum subsp. parviflorum (V.G.Soukup) K.L.Chambers & S.C.Meyers - Washington, northwestern Oregon