Malagasia is a monotypic genus of trees in the family Proteaceae. The sole species is Malagasia alticola, endemic to Madagascar.[2]
The species was originally described in 1963 by French botanist René Capuron. Capuron included the new species in the genus Macadamia, naming it Macadamia alticola.[3] The species was transferred to the newly erected genus Malagasia in 1975 by Barbara Briggs and Lawrie Johnson.[4]