[APD] Gratiola/Limnophila

[DandelionSea at aol_com]

I hate to spark up a debate again, but are there any obvious vegetative 
characteristics other than flowers that differentiate Gratiola from Limnophila?  I 
was sold the following two plants: "Gratiola officinalis" and "Limnophila 
hippuroides."  I understand that Limnophila aromatica could be mistaken for either 
of these, and they both look a lot alike.

Here are pictures:
"Gratiola officinalis"
http://photos.groups.aol.com/_img/gmdpics/5hcyjy/gratiolaofficinalis.jpg

"Limnophila hippuroides"
http://photos.groups.aol.com/_img/gmdpics/5hcyjy/limnophilahippuroides.jpg

Thank you ahead of time for any responses.
Brian Rippon
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