Euphorbia kamerunica
Euphorbia kamerunica is a flowering plant in the spurge family Euphorbiaceae. It is distributed across the Sahel of Africa, including in Nigeria, Cameroon, Chad, and Ethiopia. Common names. In Nigeria, it is commonly called "cactus," although it is not a true cactus. It is called "yěp" in the Berom language. Uses. Fencing. "Euphorbia kamerunica" is used as fencing in central Nigeria. The spines are dangerous to animals, and its toxic milky sap discourages large animals from getting in or out. "Jatropha curcas" and "Newbouldia laevis" are also used as fencing in Nigeria. Roger Blench (2017) has also proposed  Commiphora africana, "Erythrina abyssinica", "Gliricidia sepium", "Leucaena leucocephala", and "Caesalpinia bonduc" as possible options for plant-based fencing in Nigeria. Poison arrows. The Fali people living near Garoua, northern Cameroon use the poisonous sap of "Euphorbia kamerunica" to make poison arrows. Musical instruments. It is called "yěp" in the Berom language. The Berom people use it to make a scraper or guiro-like instrument called "gwák" or "gwàshák".