Alphabetical Listing of Genera within this Taxa Group:
genus     Closterium T2008083
genus     Cosmarium T2005645
genus     Euastrum T2005668
genus     Gonatozygon T2009115
genus     Hyalotheca T2005688
genus     Penium T2010428
genus     Pleurotaenium T2005763
genus     Sphaerozosma T2005797
genus     Spondylosium T2005798
genus     Staurastrum T2004382
genus     Staurodesmus T2005799
genus     Streptonema T2005804