Argyreia species- Soureni, Mirik, India

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SK515 11 MAY-2017:ID : 7 posts by 2 authors. 2 correct images as above.
Location: Balason River, Soureni, Mirik, India
Date: 21 April 2017
Altitude: 1700 ft.
Leaves only.

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I think a common plant from Convolvulaceae. Pl.  Check the spelling. Unable to recall the name right now. 

Pl. check with images at Operculina turpethum
3rd image is different– thus not forwarding it)

It seems to be Ipomoea staphylina…. please check. Need flowers for further confirmation.

Thanks, …, Also looks different from images at Ipomoea staphylina

May be some Argyreia species as per images herein.

Third image is Hyptis suaveolens.
First and second have a generic look of Argyreia.