New Zealand Journal of Botany abstracts

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Winter frost resistance of leaves of some plants from the Three Kings Islands, grown outdoors in Dunedin, New Zealand

P. BANNISTER

Department of Botany, University of Otago
P.O. Box 56, Dunedin, New Zealand

Abstract The minimum temperature at which plants from the Three Kings Islands escaped dam- age was determined as -2ƒC for Elingamita john- sonii, Tecomanthe speciosa, and Meryta sinclairii; ó4"C for Pennantia baylisiana, Paratrophis smi- thii, and Davallia tasmanii; ó5ƒC for Coprosma macrocarpa; and -6ƒC for Cordyline kaspar. Although the first three species have freezing resist- ances slightly less than those recorded for any other New Zealand plants, the range of resistance is otherwise similar to that of species of northern and lowland distribution and it appears that low freez- ing resistance is unlikely to be the major factor pre- venting the establishment of these species on suitable sites on the mainland.

Keywords frost resistance; Three Kings Islands; Elingamita; Meryta; Tecomanthe, Pennantia baylisiana; Paratrophis smithii; Coprosma macrocarpa; Cordyline kaspar, Davallia tasmanii; ferns; New Zealand flora

Received 5 October 1983: accepted 8 November 1983
New Zealand Journal of Botany, 1984, Vol. 22 : 303-306
0028-825X/84/2202-0303S2.50/0 © Crown copyright 1984

PDF file of entire paper: medium quality (328K); (scanned from paper original: notes about this process)

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