Bitter Kola is about 3-5 cm in length. It has an ellipsoid shape. A brown to deep brown peel covers it. This peel is removed before it is eaten. It leaves a Bitter taste in the mouth when it is eaten. It is this bitterness that its name is derived. The scientific name for Bitter Kola is Garcinia kola. It is called Orogbo in Yoruba. The Hausas call it Miji-goro, while it is called Akiilu by