A = Vegative cells (DIC); B = Vegetative cells (DIC) (arrow=strutted processes); C = Vegative cells and resting spores (BF); D= Resting spores (BF); Resting spore in valve view. A-C=Living cells, D in Lugol
Life-form: Cells united in chains.
Size: Diameter = 6 - 20 µm, Pervalvar axis 15-30 µm
Resting spore: +
Note:
Distinctive features: Size, ring of strutted processes and restingspore
Similar species:
Distribution: Northern Atlantic.
Literature:
Cleve, P. T. 1896a. Diatoms from Baffins Bay and Davis Strait. Bih.
Kongl. Svensk. Vet.-Akad. Handl. 22(III, 4): 1-22.
Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.
Syvertsen, E. E. 1979. Resting spore formation in clonal cultures of Thalassiosira antarctica Comber, T. nordenskioeldii Cleve and Detonula confervacea (Cleve) Gran. Beiheft zur Nova Hedwigia. 64: 41-63.