• BAKER, H. G. (1973). Evolutionary relationships between flowering plants and animals in American and African tropical forests. In: Tropical Forest Ecosystems in Africa and South America: A Comparative Review (Ed. By Betty J.Meggers, E. S.Ayensuand, W. D.Duckworth). Smithsonian Institution Press, Washington .
  • BARKER, W. F. (1950). Wachendorfia. In: Flora of the Cape Peninsula (Ed. By R. S.Adamson and T. M.Salter). Juta, Cape Town .
  • BOWERS, K. A. (1975). The pollination ecology of Solanum rostratum (Solanaceae). Amer. J. Bot. 62, 633.
  • DARWIN, C. (1877). The Different Forms of Flowers on Plants of the Same Species. John Murray, London .
  • DELLERT, R. (1933). Zur systematischen Stellung von Wachendorfia. Öst. bot. Z. 82, 335.
  • DE VOS, M. (1956). Studies on the embryology and relationships of South African genera of the Haemodoraceae: Dilatris Berg, and Wachendorfia Burm. J. South Afr. Bot. 22, 41.
  • DE VOS, M. (1961). On the embryology and relationships of the South African genera of the Haemodoraceae. In: Recent Advances in Botany I, 694698. Univ. Toronto Press, Toronto .
  • DUTT, B. S. M. (1970). Haemodoraceae. Bull Indian Nat. Acad. Sci. 41, 358.
  • FAEGRI, K. & van der PIJL, L. (1966). The Principles of Pollination Ecology. Pergamon Press, Oxford .
  • GEERINCK, D. (1968). Considerations taxonomiques au sujet des Haemodoraceae and des Hypoxidaceae (Monocotyledones). Bull Soc. Roy. Bot. Belg. 101, 265.
  • GEERINCK, D. (1969). Genera des Haemodoraceae et des Hypoxidaceae. Bull. Jard. Bot. Nat. Belg. 39, 47.
  • GEERINCK, D. (1971). Notes, in O. M. Hilliard and B. L. Burtt, Notes on some plants of southern Africa chiefly from Natal: II. Notes Roy. Bot. Gard. Edinb. 31, 1.
  • HARDIN, J. W., DOERKSEN, G., HERNDON, D., HOBSON, M. & THOMAS, F. (1972). Pollination ecology and floral biology in four weedy genera in southern Oklahoma. Sothw. Nat. 16, 403.
  • HARRIS, J. A. & KUCHS, O. M. (1902). Observations on the pollination of Solanum rostratum Dunal and Cassia chamaecrista L. Kansas Sci. Bull. 1, 15.
  • MÜLLER, F. (1883). Two kinds of stamens with different functions in the same flow et. Nature, 27, 364.
  • ORNDUFF, R. (1974). Heterostyly in South African flowering plants: a conspectus. J. South Afr. Bot. 40, 169.
  • ROBERTSON, C. (1890). Flowers and insects. V. Bot. Gaz. 15, 199.
  • SCOTT ELLIOTT, G. F. (1891). Notes on the fertilisation of South African and Madagascar flowering plants. Ann. Bot. 5, 333.
  • SKAIFE, S. H. (1952). The yellow-banded carpenter bee, Mesotrichia caffra Linn., and its symbiotic mite, Dinogamasus Braunsi Vitzthun. 7. Ent. Soc. S. Africa, 15, 63.
  • WELLER, S. G. & ORNDUFF, R. (1977). Cryptic self-incompatibility in Amsinckia grandiflora (Boraginaceae). Evolution, 31, 47.
  • WILSON, J. (1887). On the dimorphism of the flowers of Klachendorfla paniculata. Trans proc. Bot. Soc. Edinb. 17, 73.