Abstract
SINCE the discovery by Penfold and Morrison in, 19271 of physiological forms in Eucalyptus dives Schau., many other examples of this phenomenon have been found in the Myrtaceæ and also the Rutaceæ2. The term ‘physiological form’ is applied to those plants in a naturally occurring population which cannot be separated on morphological evidence, but which are readily distinguished by marked differences in the chemical composition of their essential oils.
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References
Penfold, A. R., and Morrison, F. R., Proc. Roy. Soc. N.S.W., 61, 54 (1927).
Penfold, A. R., Liversidge Lecture, Australian and New Zealand Association for the Advancement of Science (1948).
Penfold, A. R., and Morrison, F. R., Aust. J. Sci., 11, 29 (1948).
Penfold, A. R., Morrison, F. R., McKern, H. G., and Willis, J. L., “Researches on Essential Oils of the Australian Flora”, 2, 12 (1950).
Penfold, A. R., Morrison, F. R., and McKern, H. G., “Researches on Essential Oils of the Australian Flora”, 1, 12 (1948).
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PENFOLD, A., WILLIS, J. Physiological Forms of Eucalyptus citriodora Hooker. Nature 171, 883–884 (1953). https://doi.org/10.1038/171883b0
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DOI: https://doi.org/10.1038/171883b0
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