Herbal medicine is a major component in all traditional medical systems, and a common element in Siddha, Ayurvedic, Homeopathic, Naturopathic, Traditional Chinese medicine, and Native American medicine. Plant materials are used throughout developed and developing countries as home remedies, over-the- counter drug products and raw materials for the pharmaceutical industry, and represent a substantial proportion of the global drug market. A perfect example of medicinal plant credited with innumerable medicinal qualities validated by modern science and used since ancient times is C.rotundus Linn. Family - Cyperaceae are the largest family in the monocotyledons consisting of 109 genera and approximately 5,500 species [1].
C.rotundus L., (Family-Cyperaceae), also known as purple nutsedge or nutgrass, is a common perennial weed with slender, scaly creeping rhizomes, bulbous at the base and arising singly from the tubers which are about 1-3 cm long. The tubers are externally blackish in colour and reddish white inside, with a characteristic odour. The stems grow to about 25 cm tall and the leaves are linear, dark green and grooved on the upper surface. Inflorescences are small, with 2-4 bracts, consisting of tiny flowers with a red-brown husk. The nut is three-angled, oblong- ovate, yellow in colour and black when ripe. C.rotundus is indigenous to India, but are now found in tropical, subtropical and temperate regions [2].