Confucius called them the "king of fragrant plants," and John Ruskin condemned them as "prurient apparitions." Across the centuries, orchids have captivated us with their elaborate exoticism, their powerful perfumes, and their sublime seductiveness. But the disquieting beauty of orchids is an unplanned marvel of evolution, and the story of orchids is as captivating as any novel. As acclaimed writer Michael Pollan and National Geographic photographer...