Draba graminea is a species of flowering plant in the mustard family known by the common names Rocky Mountain draba and San Juan Whitlow-grass. It is endemic to the state of Colorado in the United States, where it is limited to the San Juan Mountains. This species is a small perennial herb forming a clump just a few centimeters tall. The leaves are linear to lance-shaped. The inflorescence is a raceme of up to 15 flowers with yellow petals up to half a centimeter long. The fruit is a flattened oval or lance-shaped silique up to 1.1 centimeters long.