The hydrocarbon constituents of the leaf waxes of eight species of Khaya were analysed for taxonomic purposes using GLC. The leaf waxes contained neither isoalkanes nor alkenes and the bulk of the n-alkanes were in the range of C₂₅ to C₃₃, odd-carbon number compounds predominating. It was found that the percentage composition of the n-alkane constituents of the leaf waxes varied with the age of leaves, young leaves having n-C₂₉ as the most abundant alkane, whereas older leaves had n-C₃₁.