154,548 species and infraspecific names are in the database, 21,106 images, 59,782 bibliographic items, 419,596 distributional records.

Cosmarium laeve var. distentum G.S.West

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Streptophyta infrakingdom
Phylum Charophyta
Class Conjugatophyceae (Zygnematophyceae)
Order Desmidiales
Family Desmidiaceae
Genus Cosmarium

Pictures

click on thumbnail for larger version.

Cosmarium laeve var. distentum G.S.West
Side views. Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester, England. 09 Mar 2014. © C.F. Carter (chris.carter'at'6cvw.freeuk.com.

Cosmarium laeve var. distentum G.S.West
Empty cells. Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester, England. 09 Mar 2014. © C.F. Carter (chris.carter'at'6cvw.freeuk.com.

Cosmarium laeve var. distentum G.S.West
Apical views. Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester, England. 09 Mar 2014. © C.F. Carter (chris.carter'at'6cvw.freeuk.com.

Cosmarium laeve var. distentum G.S.West
Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester, England. 09 Mar 2014. © C.F. Carter (chris.carter'at'6cvw.freeuk.com.

Cosmarium laeve var. distentum G.S.West
Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester, England. 09 Mar 2014. © C.F. Carter (chris.carter'at'6cvw.freeuk.com.

Cosmarium laeve var. distentum G.S.West
Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester. 09 Mar 2014. © C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com.

Cosmarium laeve var. distentum G.S.West
Apical views. Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester. 09 Mar 2014. © C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com.

Cosmarium laeve var. distentum G.S.West
Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester. 09 Mar 2014. © C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com.

Cosmarium laeve var. distentum G.S.West
Side views. Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester. 09 Mar 2014. © C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com.

Cosmarium laeve var. distentum G.S.West
Face views showing tubercle, Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester. 09 Mar 2014. © C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com.

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Lyngbya prasina Montagne ex K├╝tzing

Cosmarium laeve var. distentum G.S.West Collected by Howard Matcham, animal drinking trough, Boxgrove Chichester
© C.F.Carter (chris.carter@6cvw.freeuk.com) C.F.Carter (chris,carter'at'6cvw,freeuk.com C.F.Carter (chris.carter'at'6cvw,freeuk.com

Publication details
Cosmarium laeve var. distentum G.S.West 1912: 86, fig. 48

Published in: West, G.S. (1912). Fresh-water algae. Annals of the South African Museum 9: 61-91, pls, I, II.
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Type species
The type species (lectotype) of the genus Cosmarium is Cosmarium undulatum Corda ex Ralfs.

Status of name
This name is currently regarded as a synonym of Cosmarium distentum (G.S.West) Coesel & Meesters

Origin of species name
Adjective (Latin), smooth, free from uneveness, hairs or roughness (Stearn 1973).

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

General environment
This is a freshwater species.

Detailed distribution with sources (Click to Load)

Source of current name
Coesel, P. & Meersters, K. (2015). Taxonomic notes on Dutch desmids VII (new species, new names, new record). Phytotaxa 208(1): 55-62.

Key references
Carter, C.F. Williamson, D.B. & Matcham, H.W. (2015). A first record of Cosmarium laeve Rabenhorst var. distentum G. S. West from the British Isles. Quekett Journal of Microscopy 42(5): 397-381.

Created: 03 April 2014 by M.D. Guiry

Verified by: 22 June 2015 by M.D. Guiry

Accesses: This record has been accessed by users 777 times since it was created.

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

References
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Carter, C.F. Williamson, D.B. & Matcham, H.W. (2015). A first record of Cosmarium laeve Rabenhorst var. distentum G. S. West from the British Isles. Quekett Journal of Microscopy 42(5): 397-381.
Carter, C.F. Williamson, D.B. & Matcham, H.W. (2015). A first record of Cosmarium laeve Rabenhorst var. distentum G. S. West from the British Isles. The Quekett Journal of Microscopy 42(5): 397-381.

Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=148937

Citing AlgaeBase
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 20 February 2019.

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