Abstract

     The present study provides a detailed depiction of the floristic composition of Lawder District which located in the Centre of Abyan between longitudinal range 45º 20¯ to 45º 50¯ E and latitudinal range 13º 00¯ to 14º 00¯ N, with and altitudinal range of 1000 masl to 2500masl. This work was carried out to identify the floristic composition in Lawder District. The floristic study of Lawder District indicated the presence of 243 species belonging to 154 genera and 58 families. The major families based on the number of species were Euphorbiaceae, Apocynaceae, Asteraceae, Poaceae, Fabaceae, Solanaceae, Capparaceae and Boraginaceous, The biological spectrum explains that Chamephytes (35.80%), were the dominant, followed by Therophytes (25.52%, Hemicryptophytes (20.16%), Phanerophytes (14.40 %), Geophytes (2.06%),  parasite (1.65 %), and Epiphytes (0.41`%). The dominance of Chamaephytes and Therophytes reveals a thero-chamaephytic  phytoclimate for the investigated area.
The number of species was higher in the Herbs, which was represented by 52.27% of species, followed by the Shrubs 30.45%, Trees were represented by 13.17%, Lianas were represented by 2.90% and Parasite 1.23%.