{{Short description|Genus of algae}} {{Speciesbox | parent_authority = Schmidle | taxon = Polyedriopsis spinulosa | authority = (Schmidle) Schmidle | image = Polyedriopsis spinulosa as Tetraedron spinulosum in Schmidle 1896.jpg | image_caption= ''Polyedriopsis spinulosa'' }}
'''''Polyedriopsis''''' is a genus of green algae in the order Sphaeropleales. {{As of|2022|February}}, it contained a single species, '''''Polyedriopsis spinulosa'''''.<ref name=AlgaeBase>{{AlgaeBase genus|name=Polyedriopsis|id=43444|access-date=2022-02-26}}</ref> It is found worldwide in freshwater habitats as phytoplankton, but is rare.<ref name=AlgaeBase/>
''Polyedriopsis spinulosa'' consists of solitary or sometimes clustered cells, 12–25 μm in diameter. They are four- or five-sided with concave sides; the corners are rounded off and bear a tuft of 3-10 thin tapering spines, 25–50 μm long. Cells are uninuclate (with one nucleus and contain a single parietal chloroplast with one pyrenoid.<ref name=AlgaeBase/><ref name=Shubert2014>{{cite book |editor-first1=John D.|editor-last1=Wehr|editor-first2=Robert G.|editor-last2=Sheath|editor-first3=J. Patrick|editor-last3=Kociolek |date= 2014 |edition=2 |title= Freshwater Algae of North America: Ecology and Classification |last1= Shubert|first1=Elliot| last2=Gärtner |first2=Georg |chapter= Chapter 7. Nonmotile Coccoid and Colonial Green Algae |url= |location= |publisher= Elsevier Inc. |page= |isbn=978-0-12-385876-4 }}</ref>
''Polyedriopsis spinulosa'' reproduces asexually via the formation of zoospores, of which 4 to 8 are produced per cell. Zoospores are ovate, with two flagella and a stigma.<ref name=AlgaeBase/>
==References== {{Reflist|1}}
{{Taxonbar|from1=Q7226302|from2=Q69676100}}
Category:Sphaeropleales genera Category:Sphaeropleales Category:Monotypic algae genera Category:Enigmatic algae taxa Category:Freshwater algae
{{Chlorophyceae-stub}}