Oil or oleaginous plants are those from which we extract oil; they belong to a great diversity of species and are grown in various areas of the world.
Other crops are relatively important, such as groundnut, cotton, sesamum and even coconut from the fruit of which oil is extracted.
Edible oil can be extracted, as well, from other plants: maize, walnut, oil puppy, hazelnut.
The presence of oil plants on certain continents or in certain countries can also result from colonization. For instance, groundnut originating from South America has been introduced into Africa by the Portuguese and expanded to British and French colonies.