Chorizanthe watsonii (kor-i-ZAN-the WAT-son-ee-eye) is a species of flowering plant in the buckwheat family known by the common name Fivetooth Spineflower or Watson's Spineflower. They are an annual herb native to the western United States including Idaho, California, Oregon, Nevada, Utah, Washington and Arizona, namely the Mojave Desert which runs through many of them.

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