154,275 species and infraspecific names are in the database, 21,059 images, 59,714 bibliographic items, 415,636 distributional records.

Leptolyngbya Anagnostidis & Komárek, 1988, nom. et typ. cons.

Classification:
Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Synechococcophycidae
Order Synechococcales
Family Leptolyngbyaceae

Holotype species: Leptolyngbya boryana (Gomont) Anagnostidis & Komárek

Original publication and holotype designation: Anagnostidis, K. & Komárek, J. (1988). Modern approach to the classification system of cyanophytes. 3. Oscillatoriales. Archiv für Hydrobiologie, Supplement 80: 327-472, 35 figs, 13 tables.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Mai, T., Johansen, J.R., Pietrasiak, N., Bohunická, M. & Martin, M.P. (2018). Revision of the Synechococcales (Cyanobacteria) through recognition of four families including Oculatellaceae fam. nov. and Trichocoleaceae fam. nov. and six new genera containing 14 species. Phytotaxa 365(1): 1-59, 23 figs.

Taxonomic notes
Silva et al. (1996: 61) note that as pointed out by Hoffmann & Compère (1990: 309-310), the name Leptolyngbya Anagnostidis & Komárek (1988:390) was initially superfluous since the genus to which it applied included Spirocoleus lagerheimii Mobius, the type of Spirocoleus Mobius (1889: 312). The following new combinations were made by Silva et al. (1996): S. battersii, S.crosbyanus, S. fragilis, S. hendersonii, S. tenuis, S terebrans. - (11 Jul 2012) - Wendy Guiry

"In the recently defined Pseudanabaenales, the genus Leptolyngbya is the largest and most clearly polyphyletic..." (Perkerson et al. 2011: 1398). - (13 Feb 2013) - Wendy Guiry

Pseudanabaenaceae? (Zimba et al., 2017: 191, table 2). - (13 Apr 2017) - Wendy Guiry

Description: Filamentous; filaments long, solitary or coiled into clusters and fine mats (which are sometimes to macroscopic and several cm in diameter), arcuated, waved or intensely coiled, isopolar, thin, fine, 0.5-3.2 _m wide, with simple, thin but firm, usually colorless facultative sheaths opened at the apical end; sheaths joined to the trichomes or slightly distant from them, enveloping only one, very rarely (in short sections) two trichomes; rarely up to very rarely false branching (more common under special cultivation conditions), usually with only one lateral branch. Trichomes fine, cylindrical, usually not attenuated to the ends or slightly attenuated, with rounded or conical apical cells, not constricted or constricted at the crosswalls, nonmotile. Cells Å isodiametrical or longer than wide (to several times), cylindrical, with Å homogeneous content, without aerotopes, rarely with scarce prominent granules, pale blue-green, greyish, olive-green, yellowish or reddish; end cells without thickened cell walls or calyptras. Heterocytes and akinetes absent. Cells divide by Å symmetrical (rarely asymmetrical) crosswise binary fission, cells grow into original size before next division. Reproduction by motile (?) hormogonia, liberated at trichome ends, fragmented without help of typical necridic cells, but sometimes after death of cells. Leptolyngbya species are very common in soils and in periphyton and metaphyton of freshwater and halophilous (marine) biotopes, several species are known from thermal and mineral springs or from aerophytic rocky sites or walls; characteristic species grow endogloeic in mucilage and in colonial slime of other algae. They grow well in culture and are available for cultivation, one strain of "Plectonema boryanum" (= Leptolyngbya boryanum) was used as a model strain for bioassays. Taxonomy is not well known in respect of their morphological simplicity. Very common genus with many described, but all need taxonomic reevaluation and definition of diacritical features; many species were described under the generic names "Lyngbya", "Phormidium" and "Plectonema"

Information contributed by: J. Komárek. The most recent alteration to this page was made on 16 Aug 2018 by M.D. Guiry.

Numbers of names and species: There are 157 species names in the database at present, as well as 3 infraspecific names. Of the species names, 138 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):

Click here to also show infraspecific names in the list below.

References
Thomazeau, S., Houdan-Fourmont, A., Couté, A., Duval, C., Couloux, A., Rousseau, F. & Bernard, C. (2010). The contribution of sub-Saharan African strains to the phylogeny of cyanobacteria: focusing on the Nostacaceae (Nostocales, Cyanobacteria). Journal of Phycology 46(3): 564-579.

Silva, P.C., Basson, P.W. & Moe, R.L. (1996). Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

Zimba, P.V., Huang, I.S., Foley, J.E. & Linton, E.W. (2017). Identification of a new-to-science cyanobacterium, Toxifilum mysidocida gen. nov. & sp. nov. (Cyanobacteria, Cyanophyceae). Journal of Phycology 53(1): 188-197.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
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: 11 April 2002 by M.D. Guiry

Verified by: 16 August 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43604

Citing AlgaeBase
Please cite this record as:
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 24 January 2019.

SITE © 1996 - 2019 M.D. Guiry. All rights reserved.

Website Design : 249 Design Studio