I moved it to the correct entry.
In the future, if you ever need to delete or move to another entry, you simply enlarge the photo, scroll down past all the other photos and you'll see:
Actions
" View all the details about this plant
" Add a photo of this plant
" Move this image to another plant
" Propose this image be deleted
" Edit this image's caption, details, etc.
" Make this image the plant's main thumbnail
" Bury this image to page 2
" Return to the Plants Database
Select the correct option. Follow the steps and submit for admin approval.
You can see those steps in your photo above by clicking on it and then click the blue " More Photo Details "