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Isactinia

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: Actiniidae

Characteristics

Pedal disc well developed. Body not elongate. Column smooth, at the margin with an annulus of well developed, perforated pseudospherules. Fosse shallow. Sphincter endodermal, diffuse or almost absent. Oral disc in older specimens often lobed. Tentacles conical, short, numerous up to about 400, their longitudinal muscles ectodermal. Siphonoglyphs 0-2. Pairs of directives 0-2. Several pairs of mesenteries perfect. Sometimes the mesenteries of a pair are of very different size. Considerably more mesenteries at the margin than at the base. Most of the mesenteries including the directives fertile. Retractors diffuse. Parietobasilar muscles distinct but weak. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors.

References

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

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Please note that Carlgren's text contains a number of errors, and much of the information is now out of date.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. Isactinia. Version 01 January 2000 (temporary). http://tolweb.org/Isactinia/18354/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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Isactinia

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