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Interesting... I don't have this plant, but according to this site it occurs as neophyte in the eastern U.S.:
http://fl.biology.usgs.gov/Nonindigenous_Species/Glossostigma/glossostigma.html
They write: "Glossostigma cleistanthum likely entered the Mid-Atlantic region as an escape from aquarium culture, where plants are valued as ornamentals."

The U.S. Glossostigma cleistanthum was misidentified as G. diandrum: http://www.amjbot.org/content/93/6/927.full
And "Glossostigma diandra" occurs in aquarium literature: http://www.webcityof.com/miffapimore.php?id=608&name=<I>Glossostigma+diandra</I>&value=123
 

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I was trying to find out all the locations where this plant is native to. Could not find India or Asia anywhere. But we found this growing away from locality in some puddles many times. And I am really confused about the cleistanthum and diandrum. Are the same or different?
Acc. to "The Plant List" they are different species, no synonyms: http://www.theplantlist.org/tpl/search?q=glossostigma
About distinction between the 2 spp.: http://www.amjbot.org/content/93/6/927.full.pdf+html

Range of G. cleistanthum: apparently only Australia and New Zealand: https://sites.google.com/a/rsu5.org/invasive/message/glossostigma-glossostigma-cleistanthum
G. diandrum: Australia, N.Z., East Africa, India. http://fl.biology.usgs.gov/Region_5_Report/html/emergent_plants.html
So Your plant occurring in the wild in India should be Glossostigma diandrum, if it really belongs to genus Glossostigma. The misidentification of G. cleistanthum as diandrum refers to the introduced plants in Eastern U.S. only.

So it seems that G. diandrum is a suitable aquarium plant, in contrast to G. cleistanthum.
 

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Hello Tirtha,

the non-CO2 tank above looks cool, has a very natural appearance. As it grows successfully also in Your tray it's apparently a suitable aq. plant. I'm looking forward how it will do under high tech conditions.
As I wrote above, IMHO Your plant collected in India is Glossostigma diandrum, not cleistanthum native of Australia and NZ only, introduced in northeastern U.S. and first misidentified as diandrum.
 
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