Guinardia flaccida (Castracane) H. Peragallo 1892

A = Chain (BF); B = Chloroplasts, C = Nuclei. B&C (DIC)

Synonym(s): Rhizosolenia (?) flaccida Castracane 1886

Life-form: Cells united in chains

Size: Diameter = 25 - 90 µm

Resting spore:


Distinctive features: Valves flat or slightly concave. Chloroplasts star-like each with a prominent pyrenoid

Similar species:

Distribution: Worldwide

Drebes, G. 1974. Marines Phytoplankton, Eine Auswahl der Helgoländer Planktonalgen (Diatomeen, Peridineen). Georg Thieme Verlag, Stuttgart. 186 pp.

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.

Hendey, N. I. 1964. An introductory account of the smaller algae of British coastal waters. Part 5: Bacillariophyceae (Diatoms). HSMO, London. 317 pp.

  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