Three new Hantzschia species (Bacillariophyta) from the Maritime Antarctic Region

Following an earlier revision of the genus Hantzschia (Bacillariophyta) in the Maritime Antarctic Region, several at present unidentified or poorly known taxa of this aerophilic genus have been investigated using both light and scanning electron microscopy. Based on the morphological analysis of the...

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Bibliographic Details
Published in:Phytotaxa
Main Authors: BULÍNOVÁ, MARIE, KOCHMAN-KĘDZIORA, NATALIA, KOPALOVÁ, KATEŘINA, VAN DE VIJVER, BART
Format: Article in Journal/Newspaper
Language:English
Published: Phytotaxa 2018
Subjects:
Hantzschia
diatoms
Maritime Antarctic Region
morphology
new species
Algae
Antarctic
South Shetland Islands
Ross Island
Vega Island
Antarc*
James Ross Island
Online Access:http://www.mapress.com/j/pt/article/view/phytotaxa.371.3.2
https://doi.org/10.11646/phytotaxa.371.3.2
Description
Summary:Following an earlier revision of the genus Hantzschia (Bacillariophyta) in the Maritime Antarctic Region, several at present unidentified or poorly known taxa of this aerophilic genus have been investigated using both light and scanning electron microscopy. Based on the morphological analysis of the observations, three new species are currently described: Hantzschia australabundans sp. nov., H. zidarovae sp. nov. and H. zikmundiana sp. nov. The new species differ from comparable taxa in valve outline, structure of the internal proximal raphe endings and structure of the striae and areolae. Additional observations are presented on Hantzschia amphioxys and its forma muelleri, H. abundans and H. incognita, based on observations of Antarctic populations from the South Shetland Islands, Vega Island and James Ross Island. Brief notes on the ecology of all reported species are added.

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