Abyan governorate is considered  one of the dry areas, hot at summer and winter, whereas some areas at high altitude are cool .so it is characterized by its vegetation cover which is weak in its communities coverage, form and distribution. The vegetation in this case grow whereas it is suitable and available humidity as valley alluvium ,its channel ,and alluvial basins. The plants characterized by a weak in the structure of its coverage where ever they distributed. During the survey it was  noticed that where are  the differences  between the vegetation coverage from area to another, just as the evidence of its appearance and presence in the suitable environment. In the survey 188 species where identified contain 119 genus related to 50 families. Those genera were divided to their physiogenomy into trees, shrubs ,dwarf shrubs and grasses.