Hi - I am new to this list, and the only archive I could find is the Mailman archive, which is next to impossible to search. So this may be a topic that has been previously discussed, I don't know... The documentation at https://hackage.haskell.org/package/containers-0.3.0.0/docs/Data-Tree.html says that a rose tree is another name for multiway tree. But this is not true according to my understanding of the accepted definition in the CS literature (see e.g. http://doc.utwente.nl/66626/1/db-utwente-0000003528.pdf) Rose trees do not have labels at the nodes, only at the leaves (aka tips). There is another page https://wiki.haskell.org/Algebraic_data_type#Rose_tree that also uses this divergent definition. To further propagate this problem, the Wikipedia page https://en.wikipedia.org/wiki/Rose_tree uses these Haskell wiki pages as the definitive source. Tara