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Halotia D.B.Genuário et al., 2015

Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Nostocophycidae
Order Nostocales
Family Nostocaceae

Holotype species: Halotia branconii D.B.Genuário et al.

Original publication and holotype designation: Genuário, D.B., Vieira Vaz, M.G.M., Hentschke, G.S, Sant'Anna, C.L. & Fiore, M.F. (2015). Halotia gen. nov., a phylogenetically and physiologically coherent cyanobacterial genus isolated from marine coastal environments. International Journal of Systematic and Evolutionary Microbiology 65: 663-675.
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Taxonomic status: currently recognized as a distinct genus.

Description: In nature, members of Halotia are found on soil from tropical mangroves and on bones and rocks in maritime regions of Antarctica. In nature, thalli are microscopic and, in liquid media, they grow as a gelatinous biomass on the bottom of the test tube or attached to the tube walls. Colonies are irregularly spherical and are sometimes enclosed by firm mucilage and are always enclosed by diffluent mucilage. Isodiametric motile hormogonia are present, and the terminal heterocytes develop first, followed by the intercalary ones. Members of Halotia have trichomes with spherical or subspherical cells (2.0–6.8 µm long, 2.3–4.6 µm wide) and heterocytes, which are generally straight at first and then become condensed and entangled in older colonies. Terminal heterocytes are dominant and conical, while intercalar heterocytes are spherical. The cells occasionally divide into two planes, forming plurisseriate trichomes. Akinetes are apoheterocytic, subspherical or elongated (2.7–7.5 µm long, 3.0– 6.4 µm wide) and always germinate into two vegetative cells.

Origin of description: this description is from the original publication; it may have been modified slightly.

Numbers of names and species: There are 3 species names in the database at present, of which 3 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

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Verification of data
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 04 September 2017 by M.D. Guiry

Verified by: 04 September 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=52314

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 September 2019.

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