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Triactis

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: Aliciidae

Characteristics

Aliciidae with well developed pedal disc. Column smooth, in its middle provided with a ring of stalked outgrowths, which in young specimens occur sparingly and are little branched, in older ones being close-set and dichotomously ramified. On the stalk near the branches, and on the column close to the oral side of the stalk are found hemispheric vesicles containing microbasic and macrobasic amastigophors. Stalk with few, longitudinal, very weak bands of endodermal muscles. Upper part of column with spots of spirocysts and nematocysts and with ectodermal longitudinal muscles. No distinct sphincter. Margin tentaculate. Tentacles not numerous, hexamerously arranged, in their distal part with extraordinarily numerous microbasic amastigophors, in their basal part with spots as on the column. Longitudinal muscles of tentacles and radial muscles of oral disc ectodermal. 2 distinct siphonoglyphs. Six pairs of perfect mesenteries and several imperfect. 2 pairs of directives. Retractors weak, parietobasilar muscles very weak. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors, microbasic and macrobasic amastigophors.

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Please note that Carlgren's text contains a number of errors, and much of the information is now out of date.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. Triactis. Version 01 January 2000 (temporary). http://tolweb.org/Triactis/18668/2000.01.01 in The Tree of Life Web Project, http://tolweb.org/

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