Title
Morphological observations on **Vikingea gibbocalyx** (Brun) Witkowski, Lange-Bertalot & Metzeltin (Bacillariophyta) Morphological observations on **Vikingea gibbocalyx** (Brun) Witkowski, Lange-Bertalot & Metzeltin (Bacillariophyta)
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Berlin ,
Subject
Biology
Source (journal)
Nova Hedwigia: Zeitschrift für Kryptogamenkunde. - Berlin
Volume/pages
89(2009) :1/2 , p. 263-279
ISSN
0029-5035
ISI
000268616100015
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Light (LM) and scanning electron (SEM) microscope observations of Vikingea gibbocalyx (Brun) Witkowski, Lange-Bertalot et Metzeltin, from coral sands off Réunion (Indian Ocean), are presented. The species is illustrated with a particular focus on new, or previously poorly documented, morphological details such as the raised external ridges, the structure of the girdle and the structure of the areolae with typical disc-like coverings. In the middle of the valve, near the margin, two central-marginal circular structures are observed. The fine architecture of the central-marginal circular structures and the areolae are examined. The biogeography of the taxon is discussed taking into account all observations in the literature.
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