Camissonia pusilla
Encyclopedia
Camissonia pusilla is a species of evening primrose
Onagraceae
Onagraceae, also known as the Willowherb family or Evening Primrose family, are a family of flowering plants. The family includes about 640-650 species of herbs, shrubs, and trees in 20-24 genera...

 known by the common name little wiry suncup. It is native to the western United States from California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 to Idaho
Idaho
Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

, where it grows in sagebrush
Sagebrush
Sagebrush is a common name of a number of shrubby plant species in the genus Artemisia native to western North America;Or, the sagebrush steppe ecoregion, having one or more kinds of sagebrush, bunchgrasses and others;...

 and other habitat. It is a petite, hairy, glandular annual herb producing very slender erect stems up to about 22 centimeters in maximum height. The leaves linear with toothed edges and 1 to 3 centimeters long. The nodding inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

produces flowers with yellow petals 2 or 3 millimeters long and usually spotted with red near the bases. The fruit is a straight or coiling capsule up to 3 centimeters long.

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