Parthenium hysterophorus is a herbaceous, flowering weed species in the family Asteraceae. It is one of the most common weeds across the globe. [2] It is best known as Santa Maria feverfew, [3] but is also referred to as Santa-Maria, [4] whitetop weed, [5] and famine weed. It is native to the American tropics but has since become an invasive species in East Asia, India, Australia, and parts of Africa. It has become infamous; it is considered one of the most noxious, harmful weeds species. It ... Parthenium is a genus of North American annuals, biennials, perennials, subshrubs, and shrubs in the tribe Heliantheae within the family Asteraceae and subfamily Asteroideae. [4][2][3][5] Learn about Parthenium , a toxic and invasive herb that affects agriculture and human health in India. Find out how to identify, prevent and manage it using various methods such as hand picking, cultural, legal, chemical and biological control. Parthenium ( Partheniumhysterophorus L.) also known as star weed, carrot weed, white cap, white top, etc. has been found growing naturally since centuries in Mexico, North and South America, Australia, China, Pacific islands, East and South Africa and Canada.