The hypotheses put forward by Meidner and Mansfield (1968. Physiology of stomata. London: McGraw Hill), that stomatal frequency (stomata per unit area) increases with height of insertion of leaves while stomatal size decreases, are examined using material of european trees cultivated in Canberra, Australia. The data obtained do not support the hypotheses. Measurements were also made on species of Eucalyptus native to the Canberra area or cultivated there, but again no support was offered to the...[Show more]
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