Introduction 1
Key to classes 2
Key to orders of the Chlorophyceae 3
Order Zygnematales 5
Key to Southeastern Families of Zygnematales 6
Family Desmidiaceae 6
Key to Southeastern Genera of Desmidiaceae 7
Euastrum 11
Micrasterias 76
Sphaerozosma 117
Teilingia 118
Onychonema 121
Spondylosium 123
Hyalotheca 128
Groenbladia 131
Desmidium 133
Phymatodocis 142
Bambusina 144
Appendix. Nomen Dubium. 147
Bibliography - literature cited 148
Index 160
Plates 167