Unrivaled in the temperate latitudes of the world, China's rich flora comprises 30,000 species of plants, and nowhere is this floral richness more evident than in western China. With its lush forests, meandering rivers, and majestic mountains, the west of China has been a center of plant exploration for over two centuries, giving rise to many well-known species of trees, shrubs, perennials, and bulbs that populate our parks and botanical institutes,...