This species is found in southern China, Bangladesh, India, Nepal, Sri Lanka, Myanmar and Viet Nam. It has been declared as a noxious weed in North America.

This aquatic hydrogeophyte occurs in ponds, lakes and slow-moving rivers and channels. It grows as a submerged stem plant which is attached to the substrate.


Please help me in identifying this aquatic submerged plant herb.
Habitat: canal
Alt.: 52 m asl
Place: Ariyalur dist., TN
Date: 05 Mar 2014

It may be Najas

May be Najas guadalupensis

Pl. check with Nechamandra alternifolia (Roxb.) Thwaites

This is Nechamandra alternifolia

Aquatic :: Nechamandra sp for ID : 270614MK :: June007 : 5 posts by 4 authors. Attachments (5). 
Please help me in identifying this aquatic plant. Is this a Nechamandra sp.?
Was quite abundant in that low waters.
Submerged plant
Location: a wetland in Thanjore Dist., TN
Alt.: 55 m asl
Date: 30 Nov 2013 

Nechamandra alternifolia (Roxb.) Thw. Hydrocharitaceae is reported from Tamilnadu

Thanks for confirming …



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