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Growth form and environment in Saccorhiza polyschides

Published online by Cambridge University Press:  11 May 2009

Trevor A. Norton
Trevor A. Norton
Affiliation:
Department of Botany, University of Glasgow
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Extract

Descriptive work carried out in two localities at Port Erin, Isle of Man and three localities at Lough Ine, County Cork has shown that there were marked morpho-logical and anatomical differences between sporophytes of Saccorhiza polyschides (Lightf.) Batt. living in different habitats. The plants developed broad, flimsy, curved, non-digitate blades in areas of weak current; long, tough, flat, very digitate blades in strong current and short, tough, flat blades with few digits in habitats without current, but subject to wave action. By means of culture techniques in the laboratory and transplant experiments in the sea the variations were shown to be phenotypically based. The transferred plants adopted the morphology of the population into which they were moved.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 49 , Issue 4 , November 1969 , pp. 1025 - 1045
Copyright
Copyright © Marine Biological Association of the United Kingdom 1969

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