Neoholmgrenia andina

Neoholmgrenia andina is a species of evening primrose known by the common name Blackfoot River evening primrose. It is native to western North America, including southern Canada and much of the western United States, where it is a plant of mountains, and sagebrush plateaus. It is a small annual herb growing a hairy, branching stem generally under 15 centimeters tall. The bunched leaves are widely lance-shaped and 1 to 3 centimeters long. The inflorescence bears one or more flowers with usually four tiny bright yellow petals. The fruit is a flat capsule up to a centimeter long.