The Portuguese Earth Party MPT is joining the ALDE group. I would've guessed Greens or EPP as they are described as Green conservatist or agrarian. But there has been rumours that the Latvian Union of Farmers and Greens could end up in ALDE as well so I guess they have been able to present these parties a good package. ALDE is of course generally greener than the EPP, so I guess it's not that weird.
MPT really is a weird party... - but I guess that it's just me having a hard time grasping the concept of rightwing greens!