Gnetum africanum (eru or African jointfir) is a vine gymnosperm species found natively throughout tropical Africa. Though bearing leaves, the genus Gnetum are gymnosperms, related to pine and other conifers.
Gnetum africanum has numerous common names and is grown in various countries across Africa, including: Cameroon (Eru, okok, m’fumbua, or fumbua), Angola (KoKo), Nigeria (ukase or afang), Gabon (KoKo), Central African Republic (KoKo), Congo (KoKo), and the Democratic Republic of Congo (m’fumbua or fumbua). Gnetum africanum has also been referred to as a form of ‘wild spinach’ in English.