Update otherDataGenus.txt

[davidpnewton]

Alphabetise, modernise taxonomy and increase number of entries

[Helium314]

Thanks, this mostly looks good.
Though in some cases I'm not sure about the entries, e.g. Berberis does not seem to be a tree.

[davidpnewton]

I can understand what you mean about Berberis. It's one of those awkward ones where the somewhat fuzzy boundary between a large bush and a small tree comes into play.