Hello Dear Florence, It seems Mikania micrantha/ cordata. (Asteraceae )

Please find the flowers for confirming the id. 

Greetings

Anila Ajayan

I disagree with Mikania micrantha or Mikania cordata.

It could be Ipomoea coccinea of family Convolvulaceae.

Florence:

Without Flower it may be difficult to identify this plant and one would only indulge in guessing.

Best

Syed

Florence, add more pictures please. My hunch is that it is Asteraceae - Mikania or Eupatorium. Reproductive features necessary for confirmation.

Mikania (Asteraceae) is a good guess.  But researchers may post photographs with flowers or fruits for identification.

Asteraceae, not Ipomoea because it has opposite leaves, in Ipomoea are alternate.

sorry guys, this was a juvenile plant floating in the lake. 

It appears like Mikania; not sure of the species

Probably Mikania ; but as already said flower is important for confirming the name

I think it looks like Convolvulacea but it is difficult without flowers. We have some in south Argentina, in wet shady places and has light blue flowers.

Is an Asteraceae, very probably Mikania, some species growth near the water

It  is Asteraceae....Mikania species....Sapling stage....

Dear,

The plant is a Mikania. But I need the picture with flowers to identify clearly this Asteraceae. Please provide another picture with flowers.

This plant resembles Mikania micrantha (syn. Mikania scandens) belonging to asteraceae family. However, for correct identification provide the photograph of a flowering plant 

Dear,  

I agree with George K. V.

https://en.wikipedia.org/wiki/Mikania_micrantha

It is Asteraceae family, Mikania micrantha