Cashew

Cashew is a tropical evergreen tree grown for the kidney-shaped nut that hangs beneath its fruit. Cunningham calls it masculine, with the Sun and fire, and gives it a single power, money. He says cashews are used in prosperity and money spells, and lists the folk names Mbiba, Kasui and Mkanju. Wikipedia describes the tree and the nut and notes that the shell and the raw seed are toxic, while the shelled nut is edible once roasted or steamed. The oil in the shell can cause contact dermatitis, in the way of poison ivy. The two sources agree on what the plant is, and only Cunningham speaks to its use in magic.