I tried looking it up yesterday when you said it was likely a bug. I think I recall it being one of the Viburnum dentatum clan, but in looking back through the system messages I wasn't finding any one with certainty - so I gave up.
It would have been one of the plants that has an AKA listed with it, because that was the only thing showing up in black text (unclickable) in the database after I did it.
I have had more than a few repeats submitted; I keep leaving out apostrophes, trademarks, and little details like that. I'm really not trying to hog the acorns...