Everybody seems to know it. It grows everywhere. Bitter-leaf, vernonia amydalina, is a very homely plant. Wherever it grows, it flourishes. Evergreen. The Igbos call it Onugbu. The Yorubas call it Ewuro. The Hausas call it Shiwaka. Perhaps the most distinctive part of the Bitter-leaf plant is its bitterness. Every part of the plant is bitter: the leaves, stems, root, and bark