Table of Contents
Acknowledgments 10
Introduction 12
Carex Ecology 14
Carex Nomenclature and Classification 22
Carex Morphology 26
Sedge Parts (illustrations) 28
Collecting Sedges 31
How to Use the Identification Key 33
Abbreviations and Symbols 36
Identification Key to Sedges of the Pacific Northwest 37
Key A Inflorescences consisting of a single spike 38
Key B Inflorescences normally entirely staminate 41
Key C Perigynia hairy 42
Key D Kobresia; perigynia open on one side; short cespitose plants of high elevations 44
Key E Styles persistent; perigynia usually ± inflated 44
Key F Stigmas 3; perigynia not pubescent; styles deciduous 45
Key G Stigmas 2 51
Key H Stigmas 2; perigynia unwinged; spikes androgynous, entirely pistillate or with staminate flowers mixed irregularly among the pistillate flowers 55
Key I Stigmas 2; spikes gynecandrous; perigynia unwinged 60
Key J Perigynia winged; stigmas 2; mainly section Ovales 62
Map of the Counties of Oregon and Washington 70
Species Accounts 71
Sedges to Watch for in Oregon and Washington 410
Sedges with Distinctive Traits or Habitats 412
Glossary 415
Illustration Credits 420
References 422
Index 424