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Thalassiosira bulbosa Syvertsen, sp.nov., an Arctic marine diatom
Syvertsen, E.E.; Hasle, G.R. (1984). Thalassiosira bulbosa Syvertsen, sp.nov., an Arctic marine diatom. Polar Biol. 3(3): 167-172. https://dx.doi.org/10.1007/BF00442648
In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Biology > Organism morphology > Plant morphology
    Classification > Taxonomy
    Taxa > Species > New taxa > New species
    Ultrastructure
    Thalassiosira bulbosa Syvertsen in Syvertsen & Hasle, 1984 [WoRMS]
    Marien/Kust
Auteurs  Top 
  • Syvertsen, E.E.
  • Hasle, G.R.
Abstract
    Thalassiosira bulbosa Syvertsen is described from one clonal culture and natural marine, arctic material collected from brown spots on the ice and from seawater close to the ice border. The new taxon belongs to the group of Thalassiosira species with a single central strutted process and one marginal ring of strutted processes. Specific features are the conspicuous bulb-shaped outer part of the marginal strutted processes and a strutted tube surrounded by two oblong, bean-shaped satellite pores. T. bulbosa forms "resting cells" differing from the vegetative cells mainly in the degree of silicification and by having fewer openings through the frustule. The species may obtain its maximal cell size by a purely vegetative auxospore formation.
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