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