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The microanatomy of Hymenomonas lacuna sp.nov. (Haptophyceae)

Published online by Cambridge University Press:  11 May 2009

Richard N. Pienaar
Richard N. Pienaar
Affiliation:
Department of Botany & Microbiology, University of the Witwatersrand, Johannesburg, South Africa
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Abstract

A new species of Hymenomonas Stein, Hymenomonas lacuna sp.nov. from San Juan Island, Washington, U.S.A. is described using light and electron microscope techniques. The cells normally occur in non-motile clumps growing on the sides of the culture vessel. Each cell has a body covering composed of a single layer of coccoliths of unusual construction and several layers of circular unmineralized rimless scales. Occasional small elliptical scales are sometimes found.

The general cytology of the cells is discussed with special attention paid to the unusual pyrenoid and the role of the Golgi body in scale and coccolith production.

The relationship of this species to H. roseola Stein is discussed.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 56 , Issue 1 , February 1976 , pp. 1 - 11
Copyright
Copyright © Marine Biological Association of the United Kingdom 1976

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