Arthur R. Kruckeberg, Professor Emeritus of Botany at the University of Washington, is author of "Best Wildflower Hikes: Washington "(2004) "Geology and Plant Life" (2002), "Gardening with Native Plants of the Pacific Northwest "(1996), "Natural History of Puget Sound" (1995), and "California Serpentines: Flora, Vegetation, Geology, Soils" (California, 1985).