PARK SAVANNAH.—This is a natural or artificial formation, the latter a product of agriculture, and is a two-storeyed growth composed of large type trees scattered about and dominating an undergrowth of smaller trees. Type species are _Parkia filicoidea_, _Butyrospermum Parkii_, _Afzelia africana_, _Tamarindus indica_, _Acacia albida_, etc. In the artificial product the large trees often owe their presence to their value, having been allowed to stand when the land was cleared for farms, the lower storey being a subsequent growth whose height depends on the period that has elapsed since the farms were abandoned. Natural Park Savannah is well represented by the superior size of _Afzelia africana_ or _Paradaniellia Oliveri_ over the lower storey of _Terminalia_ and other species which cannot attain the height or proportions of these large trees. FRINGING FORESTS.—These are the narrow belts of forest along stream banks, and are either intrusion of evergreen and other trees from a lower latitude or the remnants of broader belts which have dwindled to a mere fringe. Typical species are _Khaya senegalensis_, _Eugenia guineensis_, _Adina microcephala_, _Diospyros mespiliformis_, etc., with a number of evergreen shrubs, typically Jasmines. The narrower the belt the lower branched are the trees. “KURIMI.”—This is the formation found in depressions, where there may or may not be a stream, not necessarily flowing in the dry season. It is an enlarged edition of the fringing belt and more nearly represents the evergreen forest. Trees of large dimensions with long, clean boles are found amidst a luxuriant undergrowth of shrubs and younger trees, which if undisturbed will attain full maturity. “Kurimi” is the chief source of timber in the Northern Provinces and from it such type species as _Khaya grandifolia_, _Chlorophora excelsa_, _Albizzia Brownei_, _A. fastigiata_, _Diospyros mespiliformis_, and frequently Oil Palms are obtained. “FADAMMA.”—This is represented by the broad river valley perennially inundated, or a depression of varying size in flat country where water lies during the rains. Typical species are _Mitragyne africana_, _Paradaniellia Oliveri_ and _Borassus flabellifer_, the Fan Palm. There is either a dense growth of grass or, in the case of temporary lakes, an area of cracked mud. Pure forests are rare in savannah and _Acacia Seyal_ and _Isoberlinia_ species are type cases. Gregarious clumps of various sizes are, however, one of the commonest features and a large number of trees is concerned. Examples are the _Acacias Seyal_, _arabica_, _albida_, _Senegal_ and _campylacantha_; _Anogeissus_, _Isoberlinia_, _Bauhinia_, _Anona_, _Bombax_, _Terminalia_, _Combretum_, _Detarium_, _Gardenia_, _Parinarium_, _Pseudocedrela_, _Stereospermum_, _Ximenia_, _Uapaca_, _Boswellia_, _Monotes_, etc.