Perhaps the best science fiction book I've ever read that so elegantly reverses our contemporary notions of gender. Not so great as a novel, unfortunately.
In Glory Season, David Brin depicts a world with an intensely matriarchal society. The majority of the population of Stratos consists of female clones, "sparked" in winter by male sperm, but genetic copies of their mothers. Men and "variant" girls are born in summer. Designed this way the founders…