The floristic features and plant communities of Lake Edku were analyzedusing 150 sampled stands representing the apparent variation in habitats andvegetation. A total of 114 species of vascular plants were recorded. Life formsrange from hydrophytes to phanerophytes, with the most species beingtherophytes, followed by geophytes-helophytes and hydrophytes. Four mainhabitats, differentiated into 11 zones, were recognized in this lake; 1- lakeproper (includes shoreline, water edge and open water), 2- drain mouths(include terraces, slopes, water edge and open water), 3- islets, and 4- fishfarms (include shoreline, water edge and open water). The vegetation of thedrain and fish farm open waters is the most similar among the 11 zones. Thedrain slopes have the highest species richness), while the lake water edgeshave the lowest. Multivariate analysis of the vegetation and environmentalvariables of the 150 sampled stands led to the recognition of 15 vegetationgroups. These groups were separated on the basis of the moisture gradientfrom the shoreline to the open water. They are named after their diagnosticspecies as follows: 1) Eichhornia crassipes, 2) Echinochloa stagnina-Eichhornia crassipes, 3) Ceratophyllum demersum-Eichhornia crassipes, 4)Potamogeton pectinatus, 5) Cyperus articulatus, 6) Typha domingensis, 7)Phragmites australis, 8) Arundo donax, 9) Juncus acutus-Typha domingensis,10) Phragmites australis-Typha domingensis, 11) Halocnemum strobilaceum-Sarcocornia fruticosa, 12) Rumex dentatus-Suaeda vera, 13) Bassia indica-Limbarda crithmoides, 14) Centaurea calcitrapa and 15) Cynodon dactylon-Medicago polymorpha. The vegetation groups (i.e. communities) representingthe open water zones were less diverse than those of the other groupsparticularly those of the shorelines.