4: Flowers of the iris family
5: With hands on hips and elbows out
9: Endowments for the arts
12: Warm in the microwave
21: Geological time periods
24: Big Mama Thornton's bag?
29: 1990 Best Actor Jeremy
30: Florence Nightingale, e.g.
31: They're passed on from father to son
48: English poet Alexander
50: Answering-machine sound