For nature lovers as well as cooks, there's plenty to whet the appetite in this unique field guide-cum-cookbook. Starting with the first plants ready for eating in the early spring (watercress and nettles) and following the sequence of harvest through the late fall (persim-mons and Jerusalem artichokes), Kay Young offers full, easy-to-follow directions for identifying, gathering, and preparing some four dozen edible wild plants of the Great Plains. And since most of the plants occur elsewhere as well, residents of other regions will find much of interest here.'This is not a survival book,"...