A Sierra Nevada Flora Author:Norman F. Weeden From Toxicodendron diversilobum (poison oak) to Zannichellia palustris (horned pondweed), this book will help every outdoor enthusiast identify, and possibly avoid certain plants in the Sierra. Covers wildflowers, ferns, shrubs, and trees. This edition strictly follows the nomenclature presented in The Jepson Manual as the basis for scientific n... more »ames.« less