giant white wakerobin

Trillium albidum, also known as giant white wakerobin, white toadshade, and sweet trillium, is a species of flowering plant in the family Melanthiaceae. The species is endemic to the western United States, ranging from west central California through Oregon to southwestern Washington. It is found in diverse habitats, on the moist slopes of mixed deciduous-coniferous forests, among shrubs and thickets, and along stream banks and river beds.