Mossia is a monotypic genus of flowering plants belonging to the family Aizoaceae.

[2] Its native range is Lesotho and South Africa and it is found in the provinces of the Cape Provinces, Free State and the Northern Provinces.

[3] The genus name of Mossia is in honour of Charles Edward Moss (1870–1930), an English-born South African botanist, the youngest son of a nonconformist minister, and is noted for being the editor of the first two parts of The Cambridge British Flora published in 1914 and 1920.

[4] The Latin specific epithet of intervallaris refers to unusually long internodes (portion of a stem between two nodes).

[5] Both the genus and species were first described and published in Gard.