The link you're talking about is present on the homepage of the Daylilies database.
If you search for "Daylilies" you are taken to that database.
There are numerous ways to get there and for neatness sake, and to not confuse people, I'd rather keep all the custom browse/search tools confined to the front page of each custom database, and then perhaps widen the ability for people to find their way to that front page.