Above tree line, the landscape is mostly alpine tundra. In the lower tundra, dwarf willow (Salix herbacea) is common, along with a wide variety of flowering plants such as Rocky Mountain Columbine (Aquilegia saximontana) and various species of dwarf alpine sunflowers. Toward the summit, the vegetation shrinks until the largest plants are little more than compact green cushions in the cracks between the rocks. Here, Alpine Forget-me-not (Myosotis alpestris) plants with hundreds of blossoms occupy areas of only a few square centimeters and rise only centimeters above the soil surface.