• Bacci, G. (1965). Sex Determination. Pergamon Press, Oxford .
  • Baker, H. G. (1967). Support for Baker's Law-as a Rule. Evolution, 21, 853.
  • Barlow, B. A. (1959). Polyploidy and apomixis in the Casuarina distyla species group. Aust. J. Bot 7, 238.
  • Carlquist, S. (1966). The biota of long-distance dispersal. IV. Genetic systems in the floras of oceanic islands. Evolution, 20, 433.
  • Hagerup, O. (1927). Empetrum hermaphroditum (Lge) Hagerup. A new tetraploid, bisexual species. Dansk bot. Ark., 5, 1.
  • Lewis, K. R. (1961). The genetics of Bryophytes. Trans. Brit, bryol. Soc, 4, 111.
  • Lloyd, D. G. (1972a). A revision of the New Zealand, Subantarctic and South American species of Cotula section Leptinella. N.Z.J. Bot., 10, 277.
  • Lloyd, D. G. (1972b). Breeding systems in Cotula L. (Compositae, Anthemideae). I. The array of monoclinous and diclinous systems. New Phytol., 71, 1181.
  • Lloyd, D. G. (1972c). Breeding systems in Cotula L. (Compositae, Anthemideae). II. Monoecious populations. New Phytol., 71, 1195.
  • Lloyd, D. G. (1973). Sex ratios in sexually dimorphic Umbelliferae. Heredity, 31, 239.
  • Lloyd, D. G. (1975). Breeding systems in Cotula. III. Dioecious populations. New Phytol., 74, 109.
  • Löve, A. & Löve, D. (1959). Biosystematics of the black crowberries of America. Can. J. Genet. Cytol., 1, 34.
  • McComb, J. A. (1966). The sex forms of species in the flora of the south-west of Western Australia. Aust. J. Bot., 14, 303.
  • Stebbins, G. L. (1970). Adaptive radiation of reproductive characteristics in Angiosperms. I. Pollination mechanisms. A. Rev. Ecol. Syst., 1, 307.
  • Stebbins, G. L. (1971). Chromosomal Evolution in Higher Plants. Arnold, London .
  • Stout, A. B. (1923). Alternation of sexes and intermittent production of fruit in the spider flower (Cleome spinosa). Am. J. Bot., 10, 57.
  • Taylor, B. W. (1955). The flora, vegetation and soils of Macquarie Island. Aust. Nat. Ant. Res. Exp. Rep..
  • Westergaard, M. (1958). The mechanism of sex determination in dioecious flowering plants. Adv. Genet., 9, 217.
  • Wild, G. V. & Zotov, V. D. (1929). Notes on sexual expression in certain species of New Zealand Coprosmas. Trans. N.Z. Inst., 60, 547.
  • Williams, W. (1964). Genetical Principles and Plant Breeding. Blackwell, Oxford .