155,542 species and infraspecific names are in the database, 21,916 images, 60,163 bibliographic items, 438,693 distributional records.

Polysiphonia dictyurus var. clevelandii Farlow, nom. illeg.

Publication details
Polysiphonia dictyurus var. clevelandii Farlow 1877: 237, nom. illeg.

Published in: Farlow, W.G. (1877). On some algae new to the United States. Proceedings of the American Academy of Arts and Sciences 12: 235-245.
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Type species
The type species (holotype) of the genus Polysiphonia is Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville.

Status of name
This name is currently regarded as a synonym of Pterosiphonia farlowii G.J.Hollenberg

Synonym(s)
No synonyms are currently included in AlgaeBase.

Nomenclatural notes
Michael Wynne (E-mail, October 2005) writes: 'I tried backtracking to see how this unfolded. The Farlow 1877 article that you cite I have before me, and on pg. 237, he has the entry "Polysiphonia dictyurus J. Ag." And under that he refers to "A single specimen, which we supposed to be new and to which we gave the manuscript name of P. clevelandii, seems to be a variety of P. dictyurus, in which the ramuli are very regularly pinnate and the ultimate ramuli all beautifully recurved. The number of cells in cross-section of the larger branches is ten."

I think that the problem is that although Farlow gave enough of a description to validate it, he failed to come out with the name "Polysiphonia dictyurus var. Clevelandii". It was never stated. "Polysiphonia ClevelandiiFarlow" was a nomen nudum in that Farlow et al. exsiccata. So in 1970 Hollenberg proposed Pterosiphonia clevelandii (Farlow) comb. nov.", but as he said in 1976, that variety clevelandii Farlow (1877) had not been validly published. So that is what led Hollenberg in this one-page note in Taxon to describe it under a totally different name, Pterosiphonia farlowii.'

General environment
This is a marine species.

No distributions recorded
No distributional records for this taxon have been recorded by AlgaeBase to date. Generally, recent national lists or extensive regional or state lists have been employed to give a general indication of distribution.

Created: 09 January 1999 by M.D. Guiry

Verified by: 20 October 2005 by M.D. Guiry

Accesses: This record has been accessed by users 354 times since it was created.

Verification of data
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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=15174

Citing AlgaeBase
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 June 2019.

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