Chenopodium leptophyllum is a species of flowering plant in the family Amaranthaceae known by the common name narrowleaf goosefoot.

It is native to much of western North America, where it is reported from Alaska to Texas and northern Mexico, and into central Canada. It can be found in many types of open habitats, often in sandy and gravelly soils, and it grows easily in disturbed areas such as roadsides.

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