I've been through this Caitlain.. if it's something you really want to find without digging through 34 pages, try this:
Punch the link to the thread and get the url. In this case (for the thread 'June 2014 Blooms') it's: allthingsplants.com/thread/view/25954/June-2014-Blooms (You can copy it by making it blue, right click and copy)
Go to google and search: site:allthingsplants.com/thread/view/25954/June-2014-Blooms "brown exotica" (This means it will only search the url you're interested in for the plant your interested in... The quotes around brown exotica means it should only find that plant and not point you to the word brown or exotica used separately.)
The only link google finds in the thread that mentions 'Brown Exotica' is:
The thread "June 2014 Blooms" in
Daylilies forum
In short, what you're after is on page 16 of the thread.. and probably a pic already in the data base from the look of it. --- I know this looks complicated, but it's not when you do it a few times. With firefox you can punch 'edit' at the top of your screen, and then 'find' and it will search the page for the word you're looking for. --- And lol, remember at the top of my post I said if it was something you really wanted to find to give this a shot.