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 Kariyat (Andrographis paniculata)
Kariyat is an erect annual herb extremely bitter in taste in all parts of the plant. It grows erect to a height of 1-4 ft in moist shady places with smooth leaves and white flowers with rose-purple spots on the petals. Ref:
http://www.flowersofindia.in/catalog/slides/Kariyat.html