Major Indicator Shrubs and Herbs in Riparian Zones on National Forests of Central Oregon

摘要

This guide contains information for major indicator species found in riparian zones on the Deschutes, Ochoco, Fremont and Winema National Forests. The purpose of the guide is to allow persons with a minimum of botanical training to identify the most important indicator plants in the riparian zone. Those plants used in the floristic key to the riparian associations and in naming the associations are presented in this paper. One exception is willows - all willows found on National Forests in central Oregon are included because of special interest in the management of these species. Willows were collected and verified wherever they were encountered. A dichotomous key to the willows is provided to help the reader with this difficult genus. It reflects recent taxonomy by Brunsfeld and Johnson (1985) and Dorn (1977).