Abstract: Fourteen taxonomic characters have been studied in five wild species in El-Riyadh city, Salsola baryosma, Zygophyllum migahidii, Francoeuria crispa, Zilla spinosa and Rumex vesicarius, collected from three different habitats throughout three seasons. In the same time mineral contents (P, K, Na, Fe, Cu, Mn and Zn) in these species have been measured during the periods of study. The results of this study revealed that the habitats have insignificant effect on the leaf characters in spite of the slightly effect on the general status, fruiting stage and colour of the plants. Whereas the mineral contents have great variations within the three habitats as well as within the same habitat throughout the different seasons. Analysis of the data revealed that the variations were within the confidence limits. From this study it can be concluded that leaf characters can be used as an effective taxonomic ones, while the chemical composition of the species are greatly affected by both habitats and seasonal variations.