Bava Batra 37: Uproot Your Trees and Go!

A complicated case of two people taking possession of the same area, but divided between the trees and the land -- but how can one have the right to trees without any land for them to be planted in? Also, a case of densely planted trees, which means some of them will need to be uprooted and replanted elsewhere, so there's no real way to establish the presumption of ownership. In contrast to the lack of presumption of ownership for a sole tree and the land it's planted in.