Glossostigma diandrum

Glossostigma diandrum (L.) Kuntze, Revis. Gen. Pl. 2: 461 1891. (syn: Glossostigma spathulatum (Hook. fil.) Arnott.; Glossostigma submersum Petrie; Limosella diandrum L.; Microcarpaea cuneifolia Hook. ex Wall.; Microcarpaea spathulata Hook.; Paederota minima Wight ex Wall.; Peltimela cuneata Raf.; Peplidium capense Spreng.; Peplidium diandrum (L.) Voigt);   

India, Bangladesh, Vietnam, trop. Africa, Mali, Senegal, Chad, Cameroon, New Zealand, USA (I) (Connecticut (I), New Jersey (I), Pennsylvania (I)) as per Catalogue of Life;

Common name: Mud-Mat, Two-anther Mud-mat

Ammannia coccina in background found in same place

... you have Glossostigma cleistanthum
This a new Zealand species Is it even found in India? 
A German Aquatic botanist is saying this is Glossostigma diandrum which is the only Glossostigma species found in India.