Chlorolobion
{{Short description|Genus of algae}}
{{Automatic taxobox
|image =
|image_caption =
|taxon = Chlorolobion
|authority = Korshikov, 1953
|type_species = Chlorolobion obtusum
Korshikov{{AlgaeBase genus|Chlorolobion|id=43427|access-date=2023-06-02}}
|subdivision_ranks = Species
|subdivision = See text
}}
Chlorolobion, sometimes spelled Chlorolobium, is a genus of algae belonging to the family Selenastraceae.{{cite web |title=Chlorolobion Korshikov, 1953 |url=https://www.gbif.org/species/2641552 |website=www.gbif.org |access-date=15 April 2021 |language=en}} The species of this genus are found in freshwater habitats in Europe and America.
Chlorolobion consists of single cells. They are either free-floating, or in the case of Chlorolobion obtusum, attached to the carapaces of freshwater crustaceans. Cells are asymmetrically fusiform (spindle-shaped) with one side being more curved than the other. The tips of the cells are rounded. The single chloroplast is plate-like and wraps around the inside of the cell, and contains one (rarely two) pyrenoids.{{cite book | title= Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições | edition=2 | year=2006 | first1=Carlos E. M. |last1=Bicudo | first2=Mariângela | last2= Menezes | publisher= RiMa Editora | pages=508 | isbn= 857656064X }} Unlike other genera in its family, Chlorolobion has pyrenoids that are surrounded by a starch sheath, making them visible in the light microscope.{{cite journal | doi=10.1046/j.1529-8817.2001.01004.x | title=Traditional generic concepts versus 18S rRNA gene phylogeny in the green algal family Selenastraceae (Chlorophyceae, Chlorophyta) | year=2001 | last1=Krienitz | first1=Lothar | last2=Ustinova | first2=Iana | last3=Friedl | first3=Thomas | last4=Huss | first4=Volker A. R. | journal=Journal of Phycology | volume=37 | issue=5 | pages=852–865 | s2cid=84625065 | doi-access=free | bibcode=2001JPcgy..37..852K }}
- Chlorolobion braunii {{small|(Nägeli) Komárek, 1979}}
- Chlorolobion obtusum {{small|Korshikov}}
- Chlorolobion lunulatum {{small|Hindák}}
- Chlorolobion tianjinensis {{small|Wang & Feng}}