A, B = Vegetative cells; C = Semiendogenous resting spores; D = Chloroplasts; E = Auxospore; F = Endogenous resting spores
Life-form: Cells often united in chains
Size: Diameter = 10-50 µm
Resting spore: +
Note: See Hasle et al. 1996
Distinctive features: Shape of cell and long external tubes of processes
Similar species:
Distribution: Cold water species of the northern hemisphere
Literature:
Cleve, P. 1873a. On diatoms from the arctic sea. Bih. Kongl. Svensk.
Vet.-Akad. Handl. 1(13): 1-28.
Hasle, G. R. 1978a. Some Thalassiosira species with one central process (Bacillariophyceae). Norw. J. Bot. 25: 77-110.
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.