What flower names did Lin Daiyu and Xue Baochai occupy respectively?

Lin Daiyu: Hibiscus is beautiful, pure and moving. The author compares Lin Daiyu to Hibiscus, implying that she is as pure, beautiful and aloof as Hibiscus, which also takes care of her character.

Xue Baochai: Peony Peony is dignified and elegant, symbolizing wealth and feeling at home. Just like peony, Xue Baochai is generous and dignified, pursuing wealth, which is in sharp contrast with Lin Daiyu.