Haslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica

TitleHaslea crucigeroides var. australis, var. nov. (Bacillariophyta), a new marine diatom from southern South America and Antarctica
Publication TypeJournal Article
Year of Publication2018
AuthorsCefarelli AO, Mascioni M., Simonato J., Almandoz GO, Vernet M
Volume357
Pagination179-188
Date Published2018/06
Type of ArticleArticle
ISBN Number1179-3155
Accession NumberWOS:000436180200002
Keywordsantarctica; Beagle Channel; blue; Brazil; diatom; gyrosigma; Haslea crucigeroides; ocean; Plant Sciences; sea; species bacillariophyceae
Abstract

A new variety of the marine diatom Haslea crucigeroides, H. crucigeroides var. australis, var. nov., is described here based on phytoplankton samples collected in sub-Antarctic coastal waters of the southern South America and Antarctica. The new taxon was characterized by using light and electron microscopy, and the holotype of H. crucigeroides, the only existing material type, was analyzed with light microscopy. Haslea crucigeroides var. australis differs from the nominal variety by having acute valve apices instead of acute rostrate; furthermore, it has a different geographical distribution. The species is being recorded in the Southern Hemisphere for the first time. Cell abundance and a brief discussion on the species habitat are also presented.

DOI10.11646/phytotaxa.357.3.2
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