Prosartes smithii, formerly Disporum smithii, is a species of flowering plant in the Colchicaceae known by the common name largeflower fairybells. It is native to western North America from British Columbia to northern California, where it grows in shady forest and woodland, including forests. It is an erect, branching perennial herb growing up to a meter tall. Its narrow, fuzzy stems bear wide, oval-shaped, pointed leaves up to 12 centimeters long and mostly hairless. The flower cluster produces up to seven drooping, hanging flowers which may be hidden in the cover of the large leaves. The flower is cylindrical to bell-shaped with six white to green-tinged petals each up to 3 centimeters long. The fruit is an oval-shaped orange or red berry just over a centimeter long.