it's in Fairchild (Miami, FL) bot garden rare-plants conservatory - so it's not something common. Definitely something tropical - and most likely not a vegetable...;). The leaves curl similar to begonias. attendants there are seriously clueless - so no help. and it's in the middle of the bed - no label. even if there was a label - it would be too far to reach. i went thru all begonias listed for conservatory - and nothing matches.
from image search i got somewhat similar begonia gray feathers - but the veining is not well defined and is not white and the leaf is different.
i am not saying it's a begonia - it just reminded me of one.
