Balsamorhiza deltoidea is a species of flowering plant in the sunflower tribe of the plant family Asteraceae known by the common name deltoid balsamroot. It is native to western North America from British Columbia to California, where it grows in many types of generally mountainous habitat. This is a taprooted perennial herb growing erect to a maximum height near 90 centimeters. The stems are hairy and hairy. The large leaves are up to 25 centimeters long and 20 wide, and are roughly triangular in shape, hairy and hairy, and often toothed along the edges. The flower cluster bears usually one or sometimes a few large flower heads, each lined with hairy, pointed phyllaries up to 4 centimeters long. The head has a center of yellowish disc florets and a fringe of pointed yellow ray florets each up to 4 or 5 centimeters long. The fruit is an achene 7 to 8 millimeters in length.