The Seed Collectors - Paperback – by Scarlett Thomas 
 
What secrets are hiding in your family tree?

Great Aunt Oleander is dead. To each of her nearest and dearest she has left a seed pod. The seed pods might be deadly, but then again they might also contain the secret of enlightenment . . .

A complex and fiercely contemporary tale of inheritance, enlightenment, life, death, desire and family trees, The Seed Collectors is the most important novel yet from one of the world's most daring and brilliant writers.