Tee hee LabRat - The bouquet of flowers that he actually brings to her at the hospital in the episode "Forget Me Not" are actually in fact - Forget Me Nots... the flower. I remember him saying that in the episode.
Hee hee...
But, maybe you could check the flowers that he had "delivered" there - the ones that Dr. Deter took the card out of and put a card in with his name on them. It's in the same episode - Forget Me Not. The actual Forget Me Not flowers Clark brings her at the beginning of the ep, but towards the end he has some delivered. I can't remember what they are - and the script doesn't say. Here's what it said:
Their hug lingers for another moment. Just when it appears
that they may actually kiss, Lois breaks off the hug and
exits the room. Deter smiles as he appreciates her
departing figure. As he is about to leave, an ORDERLY comes
in with a huge bouquet of flowers. (Doesn't say what kind - you'll have to watch the ep...)