Plagiobothrys bracteatus is a species of flowering plant in the borage family known by the common name bracted popcornflower. It is native to western North America from Oregon throughout California into northwestern Mexico, where it can be found in a variety of wet habitats such as vernal pools and other moist spots in the forests and chaparral. It is an annual herb with a mostly upright stem 10 to 40 centimeters in length. The leaves are located along the stem, the lowest, largest ones measuring up to 10 centimeters long. The plant is coated in sparse rough hairs. The inflorescence is a series of tiny flowers, the lower ones accompanied by leaflike bracts. Each five-lobed white corolla measures 1 to 3 millimeters wide. The fruit is a narrow, cross-ribbed, tubercled nutlet no more than 2 millimeters long.