The second of five volumes covering the monocots in North America north of Mexico, this volume features some of the most spectacular and showy native and naturalized species including orchids, lilies, irises, trilliums, hymenocallises, alliums, hostas, tulips, erythroniums, agaves, and yuccas. With 112 illustrations and 1,138 individual species distribution maps, this thorough volume has identification keys, summaries of habitats and geographic ranges, distribution maps, pertinent synonymies, descriptions, chromosome numbers, phenological information, and other significant biological observations for each species.