Perhaps it is in the maranta family

It looks like Ctenanthe pilosa, but I can't tell which one. They are closely related to maranthas and calatheas. Here's a link: Ctenanthe marantifolia 'Magic Mosaic'

i would tend to agree with you, @Deebie. though on my pic the white is more white then on C. pilosa.
And the images of Ag 'Green Lady' that i can find - look quite different.
I thought it resembled Ctenanthe too - the end of the leaf is typically Ctenanthe and not at all like an Ag.
However, this plant is in Longwood gardens and it's easy to track thru plant finder and there is an ascension number too
so, they say it's Aglaonema commutatum x Aglaonema pictum
http://plantexplorer.longwoodg...
and here is the ascention link
https://plantexplorer.longwood...
it comes from Florico nursery in Apopka, FL.
mislabeling is possible, i am sure
We can move the pic to another DB entry, of course.
i found this interesting image on Filipino site - it definitely looks like an ag, but with very unusual white variegation.
http://www.forest-treasures.co...

Do you have a picture of the stems of your plant? The stems on the ctenanthe/calathea/maranta are very slender as opposed to the fleshy stems of the aglaonema. Also, the leaves cluster differently. I'm not good at describing plant features, I'm sorry.

nope, unfortunately that is the only pic i have (besides the label itself :(...). but to be sure, i'll look for the same plant in the future - i have an idea where it is.
but i can show you the close-up of the same pic . here is the stem


that looks like it could be an ag stem, but it's not enough of the stem to really be able to tell..

It looks like Ctenanthe to my eyes:

yep, i agree. i got a little bit more familiar with ags lately and this is clearly NOT an ag. i'll ask for it to be moved to Ctenanthe lubbersiana. thanks!

You are very welcome ... the only reason I recognized it is because I have that one.

i searched for more info/pics and i cannot distinguish between C. pilosa 'Magic Mosaic' and C.lubbersiana. they only differ in size it seems.
C.pilosa MM is up to 16" and more compact, while C. lubbersiana goes to 4-5' and is more airy.
Longwood gardens does have an entry for C. lubbersiana though - so i'll leave it at that