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Lucanicum concatenatum, gen. nov., sp. nov., a benthic marine diatom from Guam, and a less restrictive diagnosis for Cyclophorales (Bacillariophyta)

Published online by Cambridge University Press:  22 August 2014

Christopher S. Lobban  and
Matt P. Ashworth
Christopher S. Lobban*
Affiliation:
Division of Natural Sciences, University of Guam, Mangilao, Guam 96923, USA
Matt P. Ashworth
Affiliation:
Section of Integrative Biology, 1 University Station MS A6700, 311 Biological Laboratories, University of Texas, Austin, Texas 78712, USA
*
Correspondence should be addressed to: C.S. Lobban, Division of Natural Sciences, University of Guam, Mangilao, GU 96923, USA email: clobban@uguam.uog.edu
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Abstract

Lucanicum concatenatum is a chain-forming araphid pennate, assigned to Cyclophorales: Cyclophoraceae on the basis of morphological characters and DNA sequences, resembling Neosynedra, but with platelike plastids and striae mostly undivided by vimines. So far it has only been found growing on blue coral, Heliopora coerulea, but we do not suggest that it is restricted to this habitat. Its phylogenetic position, near Cyclophora, Florella and Astrosyne, requires amendment of the diagnosis of Cyclophorales, which included characters unique to C. tenuis, the only species in the order at that time. The question of the scope and description of the Cyclophoraceae remains unresolved.

Keywords

araphid pennate diatombiodiversitycoral reefsCyclophoralesCyclophoraceaeFragilarialesHeliopora coeruleatropical diatomswestern Pacific
Type
Research Article
Information
Marine Biodiversity Records , Volume 7 , 2014 , e90
Copyright
Copyright © Marine Biological Association of the United Kingdom 2014 

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References

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Supplementary Material

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