The leaves alternate, single, hairy, acute shape. The flowers are white cone. Could it b from the convolvulaceae family plants?The leaves can be edible.
I doubt this plant is Aniseia martinicensis (Jacq.) Choisy, (Convolvulaceae), widely distributed in Old world tropics. This species is often seen seen near marshy areas.
To identify any plant it is absolutely necessary to see its flowers. A good close -up photograph of flower along with the inflorescence and detail structures of male and female reproductive organs will help a lot for the correct identification of this plant.