You're correct, the creation of tomatoes and the subsequent merging of tomato as its synonym "orphaned" the wiki. Merging tags does these and it needs to be fixed manually (these slipped my radar).
Here's the entire list of "orphaned" wikis that were caused by tag merges.
- Orchid wiki, excerpt
- Pepper wiki, excerpt
- Tomato wiki, excerpt
Please feel free to edit these in again to the respective master tags. As you were the original author who put in effort into these, it's only fair that you get the credit for the edit. Also, while you're at it, a picture for each from wikipedia might be neat too... something along the lines of the wiki for eggplant.
I'm pretty sure your long description for desert is a mirage (sorry, couldn't resist!), as the revision history shows you as the only author :). Nothing has been removed/deleted.