Becky, I "think" what you need to do is this:
go to the plant whose name you want to change
go to the bottom of the page and click on "edit plant name"
You will be able to change it to the correct name. Submit it and one of the admins will approve it.
I think you'll get an acorn for each one you do, too!
If I have given you erroneous information, Sue will let me know