Merremia dissecta ?

Merremia dissecta ?;
211212 BRS 420: Pl. find the attached file contain photo for id. request.
Location : Muthukadu, Villupuram Dist.
Date: 18.12.12
habitat: Brackish water
Habit: herb

I also like to know this id. Is this any Convolvulaceae?
A close up of flower may help. From a distance it gave me an impression of Oenothera.
It looks like member of Convulvulaceae. If you could send the specimen to me, I may able to identify the same
It may be Merremia dissecta.
Yes, me too think it is a Merremia sp. Attaching pictures of mine taken near a coastal mangrove at Point Calimere, TN.