Pilidiostigma glabrum Burret, P. recurvum (C.T. White) A.J. Scott, P. rhytisperma (F. Muell.) Burret, P. tetramerum L.S. Sm., P. tropicum L.S. Sm. and Pilidiostigma sp. (Mt Lewis G.P. Guymer 2024) all gave leaf essential oils composed almost entirely of sesquiterpenes. The principal components of all species were aromadendrene, allo-aromadendrene, b-caryophyllene, a-copaene, viridi¯orene, bicyclogermacrene, d- and g-cadinene and globulol.