"erysimum menziesii" is a mustardlike biennial or perennial herb which is short in size, reaching maximum heights of usually not more than 15 centimeters. the leaves are long and straight along the stem, and often thicker, hairier, and lobed in shape at the base. the top of the stem is occupied by a thick bunch of flowers with bright yellow, rounded petals. the flowers fall away to leave behind the fruits, which are very long siliques sticking straight out. the plant can vary in appearance, particularly across subspecies.