This book is a comprehensive review of the genera of Hydrocharitaceae, a flowering plant family, found in tropical East Africa. It presents information on their character, occurrence, habitat, phenotypic variations and distribution of each of the species under these genera.

1. Lagarosiphon 2. Hydrilla 3. Egeria 4. Blyxa 5. Vallisneria 6. Ottelia 7. Enhalus 8. Thalassia 9. Halophila