The profits obtained from ground-nuts (Arachis hypogea) in Gambia, gold mining in the Gold Coast, and from products of the oil palm (Elaeis guineensis) in the palm-oil belt serve to prevent much attention being given to cotton in these districts.
Most important are the Elaeis guineensis, Sterculia acuminata and the wild coffee tree.
North of the swamps the oil palm (Elaeis guineensis) flourishes abundantly.
The Colombian "Panama hat" is made from the fibres extracted from the ribs of the fanshaped leaves of still another species of palm, Carludovica palmata, while in the Rio Sinn region the natives make a kind of butter ("manteca de Corozo") from the Elaeis melanococca, Mart., by peeling the nuts in water and then purifying the oil extracted in this way by boiling.
The dense forests of West Africa contain, in addition to a great variety of dicotyledonous trees, two palms, the Elaeis guincensis (oil-palm) and Raphia vinifera (bamboo-palm), not found, generally speaking, in the savanna regions.
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