In Islamic legend, and in the Victorian language of flowers, the yellow rose signifies infidelity in love. ‘‘Late one summer evening, outside in the heavy scent of the yellow roses he’d planted, he tells me that he wants to keep moving. And so, I flew to Amman a few weeks later, as if to another planet.’’ ‘‘He’’ is her husband of 20 years. The marriage is over. So concludes the first chapter of Hilary McPhee’s memoir, Other People’s Houses.' (Introduction)