Abstract: This study an Phytochorology attempts to explains the vegetation patterns in relation to climatic conditions. Three main types distinguished are (1) potential evergreen forests, sub-divided into three types according to elevation, (2) potential moist deciduous and (3) dry deciduous forests. The potential evergreen forests enjoy a rain fall of over 2000mm, a tropical regime with a single peak of rains in July and 4 dry months; it is the elevation and the factor most closely linked to it-the temperature-which distinguish the three types; (a) Dipterocarpus-Kingiodendran-Humbolditia upto 750 m altitude, (b) Mesua-Palaquium from 750 to 1400m and (c) Scheflera-Gordonia-Melisoma above 1400m.The distributed forests, woodland, savanna-woodland and coffee plantations within the potential evergreen forest belt occur within the range of 2000 to 5000mm rainfall; below this lower limit of rain fall dominate the moist (Lagerstroemia-Tectonia-Dillenia) and dry deciduous (Anogeissus-Tectonia-Terminalia) forests; they occur below 900m, the former with a rainfall of 9000-1400mm belt with 5 months dry.