Hedges of cassava, Ciampear Village, West Java (2015-02-16.). Cassava planted in hedges in Batam Island was discovered to be a useful root vegetable by J. E. Teysmann in the 19th century. I saw the original use of the plant for the first time. キャッサバの生垣。有用な根菜作物であるキャッサバは19世紀に J. E. Teysmann によりバタム島の生垣で発見された。今日,生垣に植えられているのは稀。