List of Illustrations 



PAGE 



Cyperus (C diandriis) 267 



Bristle-spiked Cyperus (C. strigosus) 269 



Slender Cyperus (C. filiculmis) 270 



Pond Sedge {Dulichium arundinaceum) 271 



Slender Spike-rush {Eleocharis tenuis) 271 



Large Spike-rush {E. palusiris) 273 



Slender Spike-rush {E. tenuis) 275 



Spike-rush (£". ohtusa) 275 



Matted Spike-rush {E. intermedia) 277 



Sand-mat {Stenophyllus capillaris) 279 



Slender Fimbristylis {Fimbristylis Frankii) 279 



Great Bulrush (Scirpus validus) 283 



Salt-marsh Bulrush {S. rohustus) 283 



Wool-grass {S. cyperinus) 284 



Meadow Bulrush (5. atrovirens) 284 



Wool-grass and Bulrushes growing in marsh .... 285 



Cayuga Marsh 287 



River Bulrush (5. fluviatilis) 289 



Meadow Bulrush (5. atrovirens) 291 



Salt-marsh Bulrush( S. rohustus) 293 



Salt-marsh Bulrush {S. rohustus) 295 



Salt-marsh Bulrush {S. rohustus) by the edge of the marsh 297 



Virginian Cotton-grass {E. virginicum) 299 



White Beaked-rush {Rynchospora alba) 299 



Slender Cotton-grass (Eriophorum gracile) ' 301 



Virginian Cotton-grass {E. virginicum) 301 



Clustered Beaked-rush {R. glomerata) 303 



Low Nut-rush {Scleria verticillata) 303 



Scales, seeds, and perigynia of sedges belonging to the genus 



Carex 304 



Tufted Sedge {Carex stricta) 304 



Pennsylvania Sedge (C pennsylvanica) 307 



Bladder Sedge, (C. intumescens) 308 



Hop Sedge (C. lupulina) 309 



Fringed Sedge (C. crinita) 309 



Little Prickly Sedge (C. scirpoides) 310 



Slender Sedge (C. gracillima) 310 



Sedges (C. lurida, C. cristata, C. mirahilis) 311 



Hop Sedge (C. lurida, var. gracilis) 313 



Hop Sedge (C. Pseudo-Cypertis) 313 



XV 



