Thursday, January 20, 2011

Plants of Malaysia

Ageratum conyzoides L.

Cmmon name: Billygoat-weed, Chick weed, Goatweed, Whiteweed)

Ageratum conycoides L.  (Family Astraceae), has been known as weed of the plantations, open lands, padi fields and the bushes. The plant can reproduce very rapidly because of the numerous seeds it produces. The seeds can be blown by wind when the flower mature. This invasive weed has been recognised as a native plant of tropical America, but has become widespread in many parts of the world.

The plant has peculiar smell, which indicate that the plant is producing a volatile chemicals, possibly the essential oils. It no surprising that the plant has been identified as having traditional medicinal values in other countries. Scientific studies have shown that it contains various alkaloids, including pyrrolizidine alkaloids, such as lycopsamine and echinatine. The flavonoids found in the extracts has been tested for anti-inflammatory and antioxidant activities.

Scientific classification

Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Eupatorieae
Genus: Ageratum
Species: A. conyzoides




Kuldip S. Dogra1, Ravinder K. Kohli2, Sarvesh K. Sood1 and Praveen K. Dobhal2. 2009. Impact of Ageratum conyzoides L. on the diversity andcomposition of vegetation in the Shivalik hills of Himachal Pradesh (Northwestern Himalaya), India.International Journal of Biodiversity and Conservation, 1(4):135-145

Lin Chau Ming. 1999. Ageratum conyzoides: A Tropical Source of Medicinal and Agricultural Products. Perspectives on new crops and new uses. J. Janick (ed.), ASHS Press, Alexandria, VA. pp. 469-473

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