Camissonia campestris (field primrose, Mojave sun cup, or Mojave suncup), is a flowering plant in the family Onagraceae, native to the Mojave Desert of the United States. It grows mostly on open, sandy flats, occurring from sea level to 2,000 m in the western and central part of the desert.
It is an annual plant growing to 5âÂÂ25 cm tall (rarely to 50 cm tall). The leaves are linear, 0.5âÂÂ3 cm long, with a finely serrated margin. The flowers have four petals 5âÂÂ15 mm long, yellow with a red spot at the base, fading orange to reddish.