Xylococcus is a monotypic genus of flowering plants in the heath family which contains the single species Xylococcus bicolor, the mission manzanita. The genus Arctostaphylos (Manzanitas) and Xylococcus are both in the Ericaceae family. It was formerly classified as Arctostaphylos bicolor. The name Xylococcus comes from the Greek for "wood berry".