Thalassiosira mediterranea (Schröder) Hasle 1990

Valve in outside view (arrowhead=labiate process) (SEM)

Synonym(s): Coscinosira mediterranea Schröder 1911 , Thalassiosira stellaris Hasle et Guillard in Fryxell & Hasle 1977

Life-form: Cells united in chains

Size: Diameter = 6-20 µm

Resting spore:


Distinctive features: Radial rays and ring of strutted processes midway valve center and margin

Similar species:

Distribution: Warm water region to temperate (Hasle & Syvertsen 1996)

Fryxell, G. & Hasle, G. R.1977. The genus Thalassiosira: Some species with a modified ring of central strutted processes. Beih. zur Nova Hedwigia. 54: 67-89.

Hasle, G. R. 1990. The planktonic marine diatom Thalassiosira mediterranea (synonym Thalassiosira stellaris). Diatom Research. 5: 415-418.

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.

  Copyright © 1996-2006, Mats Kuylenstierna & Bengt Karlson All rights reserved.
Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden