Booth’s evening primrose (Eremothera boothii ssp. boothii) is a low-growing annual in the evening primrose family (Onagraceae). It is native to the western United States and northwestern Mexico, where it is most abundant in gravelly, arid areas between 200 and 7,500 feet in elevation.
The leaves are variable—green to gray-green—and often marked with dark spots or blotches. Its flower clusters bloom on nodding stalks and range in color from white to pink or red. Unlike many other members of its family, the flowers typically open at dusk.
Common names like desert lantern and woody bottle washer refer to the rigid skeleton that remains after the plant dies back in the fall.