REFERENCES
- Bayfield, N. G. (1973). Notes on water relations of Polytrichum commune Hedw. J. Bryol. 7,607–617.
- Clarke, G. C. S., Greene, S. W. & Greene, D. M. (1971). Productivity of bryophytes in Polar regions. Ann. Bot. N. S. 35, 99–108.
- Clymo, R. S. (1970). The growth of Sphagnum: methods of measurement. J. Ecol. 52, 13–49.
- Collins, N. J. (1976). Growth and population dynamics of the moss Polytrichum alpestre in the maritime Antarctic. Strategies of growth and population dynamics of tundra plants 2. Oikos 27, 389–401.
- Collins, N. J. & Oechel, W. C. (1977). The pattern of growth and translocation of photo-synthate in a tundra moss, Polytrichum alpinum. Can. J. Bot. 52, 355–362.
- Hébant, C. (1974). Studies on the development of the conducting tissue-system in the Gametophytes of some Polytrichales II. Development and structure at maturity of the hydroids of the Central strand. Journ. Hattori Bot. Lab. 38, 565–607.
- Hébant, C (1975). Organization of the conducting tissue system in the sporophytes of Dawsonkz and Dendroligotrichum (Polytrichales, Musci). Journ. Hattori Bot. Lab. 39, 235–254.
- Hébant, C. (1976). Comparative anatomy of the gametophytes in Dawsonia (Polytrichales, Musci). Journ. Hattori Bot. Lab. 40, 221–246.
- Longton, R. E. (1970). Growth and productivity of the moss Polytrichum alpestre in Antarctic regions. In: Holdgate, M. W. (ed) Antarctic Ecology, 2. Academic Press, London. pp. 818-837.
- Sarafis, U. (1971). A biological account of Polytrichum commune. N. Z. J. Bot. 9, 711–724.
- Scheirer, D. C. & Goldklana, I. J. (1977). Pathway of water movement in hydroids of Polytrichum commune Hedw. (Bryopsida). Am. J. Bot. 64, 1046–7.
- Siegal, S. (1969). Evidence for the presence of lignin in moss gametophytes. Amer. J. Bot 56, 175–179.
- Slavik, B. (1974) Methods of studying plant water relations. Ecological Studies, 9. Springer-verlag, Berlin.
- Tallis, J. H. (1959). Studies in the biology and ecology of Rhacomitrium lanuginosum Brid. II Growth, reproduction and physiology. J. Eco4 47, 325–350.
- Troughton, J. H. & Sampson, F. B. (1973). Plants: A Scanning Electron Microsope Survey. John Wiley & Sons, Australasia Pty. Ltd.
- Wilson, J. B. (1976). Teddybear Statistical Programme. Technical report, T 5, Ed.2. Univer-aity of Otago, Dunedin.
- T. G. A. GREEN, Department of Biological Sciences, University of Waikato, Hamilton, New Zealand.
- K. A. CLAYTON-GREENE, Botany Department, University of Melbourne, Parkville, Victoria, Australia 3052.