Fadogia homblei

Fadogia homblei is a 60 cm-tall erect perennial sub-Saharan shrublet with subterranean stems producing unbranched annual shoots, and is one of some 47 species of Fadogia in the family Rubiaceae. It occurs in Angola, Tanzania, Malawi, Mozambique, Zambia, Zimbabwe, and in Limpopo and Gauteng Provinces in South Africa. This species has leaves in whorls of 3–5. The leaves are elliptic or lanceolate, shiny above, with greyish-white papillose hairs on the undersurface. Fragrant flowers are in 3-5-flowered whorls arising from the leaf nodes, and are creamy yellow to bright yellow in colour. The fruit is spherical, crowned with the persistent calyx limb, initially green, but turning black when ripe, and is edible. Browsing of this species has long been known to cause 'gousiekte' ("quick disease"), a cardiotoxicosis of ruminants marked by heart failure four to eight weeks after ingestion of certain species of Vangueria, Pavetta, and Fadogia, and is thought to be caused by the polyamine pavettam......read more on Wikipedia.