Februuary
Roya closterioides
January
Cosmarium quinarium
2012
 2011
December
Staurastrum sexcostatum
November
Desmidium aptogonum
October
Actinotaenium phymatosporum
September
Cosmarium nymannianum
August
Xanthidium basidentatum
July
Closterium angustatum
June
Staurastrum polytrichum
May
Cosmarium brebissonii
April
Actinotaenium rufescens
March
Closterium striolatum
February
Staurastrum bloklandiae
January
Cosmarium subprotumidum
2011
 2010
december
Pleurotaenium coronatum
November
Actinotaenium subtile
October
Sphaerozosma filiforma
September
Docidium undulatum
August
Xanthidium fasciculatum
July
Closterium navicula
June
Staurastrum hystrix
May
Cosmarium ungerianum var. subtriplicatum
April
Euastrum insigne
March
Cosmarium venustum
February
Actinotaenium silvae-nigrae
January
Penium polymorphum
2010
 2009
December
Desmidium baileyi
November
Closterium pusillum
October
Cosmarium perforatum
September
Gonatozygon brebissonii
Aucust
Cosmarium ovale
July
Penium exiguum
June
Cosmocladlum perissum
May
Euastrum binale
April
Netrium oblongum
March
Cosmarium punctulatum
February
January
2009
 2008
December
November
October
Docidium baculum
September
Actinotaenium cucurbita
August
Xanthidium octocorne
July
Tetmemorus granulatus
June
Cosmarium obliquum
May
Staurastrum spongiosum
April
Cosmarium subgranatum
March
Xanthidium cristatum
February
Cosmocladium constrictum
January
Micrasterias oscitans
2008
 2007
December
Cylindrocystis gracilis
November
Micrasterias denticulata
October
Closterium delpontei
September
Netrium interruptum
August
Teilingia granulata
July
Euastrum bidentatum
June
Staurastrum diacanthum
May
Sphaerozosma vertebratum
April
Spondylosium pulchellum
March
Staurodesmus extensus
February
Spirotaenia erythrocephala
January
Euastrum elegans
2007
 2006
December
Closterium setaceum
November
Actinotaenium diplosporum
October
September
August
July
June
May
April
March
February
January
2006
2005
Decmber
November
October
September
August
July
June
May

April
March
February
January
2005
2004
December
November
October
September
August
Tortitaenia obscura
July
Spirotaenia condensata
June
May
April
March
February
January
2004
2003
December
November
October
September
August
July
June
May
April
March
February
January
2003
2002
December
November
October
September
August
JulY
June