Lauderia annulata P.T. Cleve, 1873

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Lauderia annulata

A-F = Cells in chains; G = Cleaned valve with processes and one labiate process (=arrow). A,B,D-F (BF), C&G (PC)

Photographer/artist Mats Kuylenstierna

Additional image information

Lauderia annulata
Mats Kuylenstierna
Copyright holder
Maria Kuylenstierna
University of Gothenburg, Marine botany
Bengt Karlson
A-F = Cells in chains; G = Cleaned valve with processes and one labiate process (=arrow). A,B,D-F (BF), C&G (PC)
Image galleries
Kuylenstierna, Skagerrak-Kattegat


IDs in other systems
Tropic type
A large marginal labiate process. Many processes on valve face and margin
Other remarks

Distribution: Tropical to temperate seas
Life form
Cells united in long chains
Diameter = 20-75 µm, pervalvar axis 26-96 µm
Cleve, P. 1873b. Examination of diatoms found on the surface of the Sea of Java. Bih. Kongl. Svensk. Vet.-Akad. Handl. 1(13): 1-13.
Cupp, E. E. 1943. Marine Plankton Diatoms of the West Coast of North America. Bulletin of the Scripps Inst. Oceanogr. of the University of California. 5: 1-237.
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.
Syvertsen, E. E. & Hasle, G.R. 1982. The marine planktonic diatom Lauderia annulata Cleve, with particular reference to the processes. Bacillaria. 5: 243-256.


Species Lauderia annulata
Author P.T. Cleve 1873
Class Diatomophyceae (Bacillariophyceae)
Trophy AU
Geometric shape cylinder
Formula p/4*d^2*h
Size class 1 2 3
Unit cell cell cell
Size range 33-35x33-35 32x30 40x30
Height(h), µm 34.0 30.0 30.0
Diameter(d1), µm 34.0 32.0 40.0
No. of cells/counting unit 1 1 1
Calculated volume, µm3 30 854 24 115 37 680
Calculated Carbon pg/counting unit 1 260 1 031 1 481


Olenina, I., Hajdu, S., Edler, L., Andersson, A., Wasmund, N., Busch, S., Göbel, J., Gromisz, S., Huseby, S., Huttunen, M., Jaanus, A., Kokkonen, P., Ledaine, I. and Niemkiewicz, E. 2006 Biovolumes and size-classes of phytoplankton in the Baltic Sea HELCOM Balt.Sea Environ. Proc. No. 106, 144pp. (PDF),