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A New Punctate Species of Halosphaera

Published online by Cambridge University Press:  11 May 2009

G. T. Boalch  and
J. P. Mommaerts
G. T. Boalch
Affiliation:
The Plymouth Laboratory
J. P. Mommaerts
Affiliation:
Laboratory of Systematic Botany and Ecology, FreeUniversity of Brussels
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Extract

The new species Halosphaera parkeae (Prasinophyceae) is described from material collected in the western English Channel. The microscopical structure of the outer wall of the non-motile phase is described and two types of punctation are demonstrated. A general account of the cytology of the mature non-motile phase and of the motile cell is given. Electron micrographs of the scales of the motile cell are compared with those of other species of the genus where known. Buoyancy, size and reproduction are discussed and a number of new taxonomic characters emphasized. The occurence in the same areas of a second type very similar but smaller in size is recorded and the authors have named this form Halosphaera parkeae forma minuta.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 49 , Issue 1 , February 1969 , pp. 129 - 139
Copyright
Copyright © Marine Biological Association of the United Kingdom 1969

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