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Please note: Entries in the above species list are the original binomina of species according to Carlgren's 1949 catalog. Nomenclatorial inconsistencies need to be resolved in a future revision of this genus (see below).
Containing group: Edwardsiidae


Edwardsiidae with the column divisible into physa, scapus, scapulus and capitulum, though these regions may be slightly distinguished. Scapus with or without adherent material, without nemathybomes and tenaculi. Tentacles 10-18, the outer longer than the inner. A single, ventral siphonoglyph. Mesenteries as in Edwardsia. Retractors in comparison with those of other Edwardsiidae rather weak. Ciliated tracts may be discontinuous. Curious, ciliated, spherical bodies, nematosomes, containing nematocysts occur in the coelenteron, in which they swim about. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors.


Carlgren, O. 1949. A Survey of the Ptychodactiaria, Corallimorpharia and Actiniaria. Kungl. Svenska Vetenskapsakadamiens Handlingar, series 4, volume 1, number 1.

Title Illustrations
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Nematostella vectensis with egg masses.
Photo copyright © 2000, Ron Ates.
Permission by Prof. C. Hand to take this picture in the Bodega Marine Lab, University of California is gratefully acknowledged.

Copyright © 2000 Ron Ates
About This Page
The information provided on this page is based on Oscar Carlgren's 1949 catalog.
Copyright © 1949 Swedish Academy of Sciences.

Please note that Carlgren's text contains a number of errors, and much of the information is now out of date. An update of the catalog is currently under preparation in Daphne Fautin's laboratory, and the results of this work will be incorporated in future versions of this page.

Keyboarding of Carlgren's catalog was done as part of a project to create an electronic database of the sea anemones of the world, funded by NSF Grant DEB9521819, awarded to Daphne G. Fautin. This grant is in the program Partnerships to Enhance Expertise in Taxonomy (PEET). Susanne Hauswaldt, Katherine Pearson, and April Wakefield-Pagels contributed to the keyboarding effort.

Correspondence regarding this page should be directed to Daphne G. Fautin at

All Rights Reserved.

Citing this page:

Tree of Life Web Project. 2000. Nematostella. Version 01 January 2000 (temporary). http://tolweb.org/Nematostella/17796/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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