Pachysandra terminalis, the Japanese pachysandra, carpet box or Japanese spurge, is a species of flowering plant in the boxwood family Buxaceae, native to Japan, Korea and China and introduced to eastern North America.
Plant taxonomy classifies Japanese pachysandra, also called "Japanese spurge," as Pachysandra terminalis and as belonging to the boxwood family. These widely grown plants are evergreen perennials. They are herbaceous in the sense that they lack woody stems, but their foliage does not die back in winter, it merely yellows a bit. In terms of usage, Japanese pachysandra plants are classified as ground covers. Wider (12 inches) than it is tall (6 inches), this ground cover produces white flowers in spring but is grown primarily for its leathery, dark-green leaves. But there are many plants with the common name of "spurge" that are not related to Japanese pachysandra, especially plants in the Euphorbia genus that are useful in rock gardens.