Substitute for epazote

Hi,

I'm trying out a black beans recipe which calls (unsurprisingly) for epazote. The thing is, I live in Athens, Greece and Mexican cooking ingredients are not that readily available. I recently learned about epazote myself - I've never had it so I don't know how it tastes. Is there an ingredient that I could find in any supermarket (e.g. bay leaves) that could replace epazote? Perhaps not in its gas reducing function, but something that comes close taste wise?

Thanks so much.

gp