Adding synonyms is relatively simple. Go to a plant's page, at the bottom, you will see "Editing Actions", click on "edit plant name". That will open the "Editing a plant" page. Next to "Botanical Names" is a little green circle with a white cross. Click the green circle and a text box will appear. Type in the genus and species names, select synonym from the pull down menu, hit the Submit button, and you are done. You can add as many names at once as you'd like, just be sure to type each one on a separate line.
