Cruckshanksia is a genus of flowering plants in the family Rubiaceae. The genus is found in Argentina and Chile. There are 7 species in the genus. They are herbs and shrubs that grow in the Atacama Desert and the Andes. They have yellow or pink flower corollas and white or colored petal-like sepals. Cruckshanksia pumila is an annual species that grows in dry regions and only appears after rare rain events; it is generally seen every 3 to 5 years during El Niño.