General: Booth's Evening Primrose (Eremothera boothii) is an annual forb that grows from a leafy basal rosette and produced upright flower stalks and 4-petaled, white flowers. As the plant ages, the stems become stiff and spiky, and they can fold up to resemble a Birdcage Evening Primrose.

Booth's Evening Primrose is a common component of vegetation communities in dry, well-drained sandy and gravelly soils on desert flats and lower bajadas in the Lower Sonoran (Creosote-Bursage Flats) and Upper Sonoran (Mojave Desert Scrub) life zones.

Around Las Vegas, look for Booth's Evening Primrose on lower-elevation desert flats.

Family: Evening Primrose (Onagraceae). Formerly Camissonia boothii.