ABSTRACT
Chromolaena odorata (L.) R.King and H.Robinson (formerly Eupatorium odoratum L.), a perennial belonging to the plant family Asteraceae (=Com-positae), is a diffuse, scrambling shrub that is mainly a weed of plantation crops and pastures of southern Asia and western Africa. It forms a bush 3-7 meters in height when growing in the open (Fig. 1). Native to Mexico, the West Indies, and tropical South America, it was spread widely by early navi-gators. It is a weed of 13 crops in 23 countries (Holm, 1977).
