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Distribution and Morphological Studies of Cyperus rotundus, a perennial grass of Chouparan

Nirbhay Ambastaa*, C.T.N. Singhb & S.B. Chaudharyc
a. Dept. of Botany, V.B.U., Hazaribagh.
b. Dept. of Botany, Ramgarh College, Ramgarh,
c. Head, P.G. Dept. of Botany, V.B.U.,Hazaribagh.
Received 11th December, 2008; Revised 10th February, 2009

Abstract : Cyperus are perennial or, annual herbs. The rhizomes, if present are short or, long creeping. Stems are usually trigonous or, triquetrous, sometimes terete. Leaves are mostly clustered at the base, lowermost or, sometimes all reduced to bladeless sheaths. Inflorescence is capitate orĀ  anthelate; bracts are usually several & formed an involucre. The outermost bract is the longest one. Spikelets are digitately arranged. They are linear lanceolate oval, One to many flower rachilla sometimes are winged. Flowers are all bisexual, with a one or, few male. Perianths are absent. Stamen number one to three. Ovary is caducous. There are 2-3 stigmas. Fruit is a nut. It is lenticular, trigonous or, triquetrous.


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