The South African species of Hemizygia (Lamiaceae)

The South African species of Hemizygia are reviewed and 28 species are recognized, including the following new names:  H. macrophylla (Guerke) Codd (= Syncolostemon macrophyllus Guerke),  H. pretoriae Guerke var. heterotricha Codd,  H. cinerea Codd,  H. incana Codd,  H. modesta Codd, H. parvifolia Codd, H. punctata Codd and  H. ramosa Codd.