As mentioned by Dr Tarek , if that rounded stucture is fruit, then it may not Excocaria agallocha. I am having some photographs of Excocaria agallocha with fruits and inflorescenes which were collected from Mangroves of Godavari estuary, I am attaching those for your information, please check
Thanks a lot for your suggestions. It also seems to me that it is not E. agallocha. However at the end of this month, I am going again to SMF and if found this plant, I will certainly check it. Kind regards