Asian Ambulia--?Latin name

[Brown_D at pcfnotes1_wustl.edu]

I seem to recall this coming up recently, but can't find the right thread
in the archives.  I just bought some "asian ambulia" from a store that also
carries a plain "ambulia", which is referenced on the Tropica web site as
"Limnophila Sessiflora".  I'm not sure if what I have is a different
variety of the same species, or a completely different species
altogether....with perhaps different requirements.  Any input gladly
appreciated!

Diane Brown