This is an important medicinal plant. Please read the interesting and useful article by Mrs. Sheila Rani Chunkat on its importance for the preparation of 'bhringaraja' oil and other medicinal uses in Ayurveda. The link is provided below. http://www.hindu.com/2000/04/02/stories/1302048d.htm Extract from the article: Karisalankanni, as it is known in Tamil (bhringaraj - Sanskrit), is one of the 10 auspicious herbs of the Dasapuspam group (10 flowers). There are three varieties of bhringarajah - blue, white and yellow. The Latin name for both the blue and the white varieties is Eclipta prostrata (earlier called Eclipta alba). The Tamil name is karasalankanni. The white variety grows wild and is easily available. The blue variety is rare and found on hilly slopes. The Latin name for the yellow variety is Wedelia chinensis (also sometimes known as Wedelia calendulacea) and is called manjal karisalankanni in Tamil. The yellow variety is not easily available in the wild and is generally grown in homes. The three varieties of karisalankanni belong to the same family - Asteraceae.
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