Ruschia is a genus of succulent plant, in the family Aizoaceae, indigenous to the dryer parts of southern Africa.

Typical features of the genus include grey or blue-green succulent leaves, that are 3-sided or triangular in cross-section and are often covered with tiny darker transparent spots.

Another common feature is the small, year-round, pink or white flower clusters.

As with most Aizoaceae, these are hygrochastic, with triangular valves that open and close with changes in humidity.

The seed chamber valves of genus Lampranthus have only the two expanding keels while the closing body is present, but not visible, and Lampranthus valves also have wings on either side.