Leptosiphon liniflorus is a species of flowering plant in the phlox family known by the common name narrowflower flaxflower.

It is native to the western United States from Washington and Idaho, through Oregon and Nevada, and across California. It grows below 1,700 metres (5,600 ft), in many types of habitats, including chaparral, oak woodland, grasslands, yellow pine forest, and on serpentine soils.

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