Somehow I don't think Sauron would have the sentiment "I am a flower" engraved on the one ring. :-D
Aw, c'mon...maybe he has a kinder, gentler side that we just don't know about - Sauron the sensitive metrosexual Evil Overlord.
Or maybe it's an elf ring.
Perhaps he meant one of those really stinky flowers that smells like rotting meat?