Did residents of this idyllic wine country town illegally plant an endangered flower to sabotage a proposed housing development? That's the question at the heart of a quarrel folks here have dubbed "Foamgate." Bob Evans, a 72-year-old retired elementary school principal, says he was walking with his dog last year when he came upon the tiny white flowers of Sebastopol meadowfoam poking from shallow pools of water in a grassy field. The former bean farm happens to be the chosen site of the 20-acre Laguna Vista housing development. Evans and other opponents seized on the discovery of the federally protected...