Microbiota is a monotypic genus of evergreen coniferous shrub in the cypress family Cupressaceae, containing only one species, Microbiota decussata (Siberian carpet cypress, Russian arbor-vitae). The plant is native and endemic to a limited area of the Sikhote-Alin mountains in Primorskiy Krai in the Russian Far East. The name causes much confusion because of other meanings for the word microbiota, but the genus name was derived from micro-, meaning small, + Biota, the genus name for a closely related conifer, a species formerly called Biota orientalis, now renamed Platycladus orientalis.