Serpentine (ultramafic) geoecology involves geology, soils, and biotic (plants and other living organisms) communities. The unique features of serpentine geology, soils, and vegetation are summarized in three book chapters,and there are seven chapters on the geoecological landscapes in natural environments from Alaska to Central America and Caribbean Islands,and from eastern to western North America. Soils and plant communities were described and characterized on peridotites, serpentinites, Archean volcanic rocks, Neoproterozoic layered intrusions, and Alaskan-type concentric bodies. Laboratory data were included with many of the descriptions of soils, and plant community distributions were related to physical environments. The book contains much information that is not available from any other source.