Washington Flora Checklist
A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium


Checklist » Cyperaceae
Cyperaceae   (Sedge Family)

Notes: Originally based on draft treatment by Peter Zika, March 2000; next updated 2004 based on Flora of North America, Volume 23; most recent update in 2009 based on "Field Guide to the Sedges of the Pacific Northwest" (SPNW) [2008].

Family Synonyms: (none)

» Wilson, B. L., R. Brainerd, D. Lytjen, B. Newhouse, and N. Otting. 2008. Field guide to the sedges of the Pacific Northwest. Oregon State University Press, Corvallis, OR.

Wilson, B. L., R. Brainerd, M. Huso, K. Kuykendall, D. Lytjen, B. Newhouse, N. Otting, S. Sundberg and P. Zika. 1999. Atlas of Oregon Carex. Native Plant Society of Oregon, Occasional Paper No. 1. Eugene, OR. 29 pp.

Family treatment authored by Fred Weinmann, Peter F. Zika; last updated 11/19/2009 by David Giblin
Taxon (native species in boldface) # Synonyms Common Names
Amphiscirpus nevadensis (S. Wats.) Oteng Yeboah   [FNA23] 2 Nevada bulrush
Bolboschoenus fluviatilis (Torr.) Sojak   [FNA23] 3 river bulrush
Bolboschoenus maritimus L. ssp. paludosus (A. Nelson) T. Koyama   [FNA23] 5 saltmarsh bulrush, seacoast bulrush
Carex agastachys L. f.   [Jimenez-Mejias et al. 2017. Taxon 66(4): 974-975.] 1
Carex albonigra Mack.   [SPNW, FNA23] 0 black-and-white-scaled sedge
Carex amplifolia Boott   [SPNW, FNA23] 0 big-leaf sedge
Carex angustata Boott   [SPNW, FNA23] 3 many-fruit sedge, wide-fruited sedge
Carex anthoxanthea J. Presl & C. Presl   [SPNW, FNA23] 0 yellow-flowered sedge, grassy-slope arctic sedge
Carex aperta Boott   [SPNW, FNA23] 6 Columbia sedge
Carex aquatilis Wahlenb. var. aquatilis    [SPNW, FNA23] 7 water sedge
Carex aquatilis Wahlenb. var. dives (T. Holm) Kük.   [SPNW, FNA23] 4 Sitka sedge
Carex arcta Boott   [SPNW, FNA23] 4 northern clustered sedge
Carex atherodes Spreng.   [SPNW, FNA23] 0 awned sedge, wheat sedge
Carex athrostachya Olney   [SPNW, FNA23] 1 slender-beak sedge
Carex atrosquama Mack.   [SPNW, FNA23] 4 black-scale sedge
Carex aurea Nutt.   [SPNW, FNA23] 0 golden sedge, pumpkin sedge
Carex backii Boott   [FNA23] 0 Back's sedge
Carex bebbii (L. H. Bailey) Olney ex Fernald   [SPNW, FNA23] 1 Bebb's sedge
Carex bolanderi Olney   [SPNW, FNA23] 2 Bolander's sedge
Carex brevior (Dewey) Mack. ex Lunell   [SPNW, FNA23] 2 Plains oval or short-beaked sedge
Carex breweri Boott   [SPNW, FNA23] 1 Brewer's sedge
Carex brunnescens (Pers.) Poir. ssp. brunescens    [SPNW, FNA23] 9 brownish sedge
Carex buxbaumii Wahlenb.   [SPNW, FNA23] 3 Buxbaum's sedge, brown bog sedge
Carex californica L. H. Bailey   [SPNW, FNA23] 0 California sedge
Carex canescens L. ssp. canescens    [SPNW, FNA23] 5 grey sedge, silvery sedge
Carex capillaris L.   [SPNW, FNA23] 4 hair sedge
Carex capitata L.   [SPNW, FNA23] 2 capitate sedge
Carex chordorrhiza Ehrh. ex L. f.   [SPNW, FNA23] 0 creeping sedge, cordroot sedge, rope-root sedge
Carex circinata C. A. Meyer   [SPNW, FNA23] 0 coiled sedge
Carex comosa Boott   [SPNW, FNA23] 0 bristly sedge, bearded sedge
Carex concinnoides Mack.   [SPNW, FNA23] 0 northwestern sedge, tetrastigmatic sedge
Carex cordillerana Saarela & B. A. Ford   [SPNW, FNA23] 1 cordilleran sedge
Carex crawei Dewey   [SPNW, FNA23] 0 Crawe's sedge
Carex crawfordii Fernald   [SPNW, FNA23] 0 Crawford's sedge
Carex cusickii Mack. ex Piper & Beattie   [SPNW, FNA23] 1 Cusick's sedge
Carex davyi Mack.   [FNA23] 1 Davy's or Constance's sedge
Carex deflexa Hornem. var. boottii L. H. Bailey   [FNA23] 3 northern sedge
Carex densa (L. H. Bailey) L. H. Bailey   [SPNW, FNA23] 7 dense sedge
Carex deweyana Schwein. var. deweyana    [SPNW, FNA23] 1 Dewey's sedge
Carex diandra Schrank   [SPNW, FNA23] 0 lesser panicled sedge, lesser tussock sedge
Carex disperma Dewey   [SPNW, FNA23] 1 short-leaf sedge
Carex divulsa Stokes ssp. divulsa    [FNA23] 0 grassland sedge
Carex douglasii Boott   [SPNW, FNA23] 0 Douglas' sedge
Carex eburnea Boott   [FNA23] 0
Carex echinata Murray ssp. echinata    [SPNW, FNA23] 3 star sedge
Carex echinata Murray ssp. phyllomanica (W. Boott) Reznicek   [SPNW, FNA23] 1 coastal star sedge
Carex engelmannii L. H. Bailey   [SPNW, FNA23] 3 Mt. Adams sedge
Carex exsiccata L. H. Bailey   [SPNW, FNA23] 1 big inflated sedge
Carex feta L. H. Bailey   [SPNW, FNA23] 1 green-sheath sedge
Carex filifolia Nutt. var. filifolia    [SPNW, FNA23] 1 thread-leaf sedge
Carex flava L.   [SPNW, FNA23] 4 yellow-green sedge, yellow sedge
Carex fracta Mack.   [SPNW, FNA23] 0 fragile-sheath sedge
Carex geyeri Boott   [SPNW, FNA23] 0 elk sedge, Geyer's sedge
Carex gynocrates Wormsk. ex Drej.   [SPNW, FNA23] 1 northern bog sedge
Carex halliana L. H. Bailey   [SPNW, FNA23] 1 Hall's sedge
Carex hassei L. H. Bailey   [SPNW] 3 false golden sedge
Carex hendersonii L. H. Bailey   [SPNW, FNA23] 0 Henderson's sedge
Carex heteroneura W. Boott   [SPNW] 4 different-veined sedge, smooth-fruited sedge
Carex hoodii Boott   [SPNW, FNA23] 0 Hood's sedge
Carex hystericina Muhl. ex Willd.   [SPNW, FNA23] 1 porcupine sedge
Carex illota L. H. Bailey   [SPNW, FNA23] 0 small-head sedge
Carex infirminervia Naczi   [SPNW] 1 weak-veined sedge
Carex inops L. H. Bailey ssp. inops    [SPNW, FNA23] 3 long-stolon sedge
Carex integra Mack. 0 smooth-beaked sedge
Carex interior L. H. Bailey   [SPNW, FNA23] 1 inland sedge
Carex interrupta Boeckeler   [SPNW, FNA23] 1 interrupted sedge, green-fruited sedge
Carex jonesii L. H. Bailey   [SPNW, FNA23] 1 Jones' sedge
Carex kobomugi Ohwi   [SPNW, FNA23] 0 Japanese sedge
Carex lacustris Willd.   [FNA23] 0
Carex laeviculmis Meinsh.   [SPNW, FNA23] 1 smooth-stemmed sedge
Carex lasiocarpa Ehrh.   [SPNW, FNA23] 1 wiregrass
Carex lenticularis Michx. var. impressa (L. H. Bailey) L. A. Standl.   [SPNW, FNA23] 3 few-ribbed sedge
Carex lenticularis Michx. var. limnophila (T. Holm) Cronquist   [SPNW, FNA23] 3 lakeshore sedge
Carex lenticularis Michx. var. lipocarpa (Holm) L. A. Standl.   [SPNW, FNA23] 4 lakeshore sedge, Kellogg's sedge
Carex leporina L.   [SPNW] 2 oval broom sedge
Carex leporinella Mack.   [SPNW, FNA23] 0 Sierra hare sedge
Carex leptalea Wahlenb.   [SPNW, FNA23] 5 delicate sedge, jelly bean sedge
Carex leptopoda Mack.   [SPNW, FNA23] 2 slenderfoot sedge, short-scaled sedge
Carex limosa L.   [SPNW, FNA23] 0 mud sedge
Carex livida (Wahlenb.) Willd.   [SPNW, FNA23] 4 pale sedge, livid sedge
Carex longii Mack.   [SPNW, FNA23] 0 Long's sedge
Carex luzulina Olney   [SPNW] 4 woodrush sedge
Carex lyngbyei Hornem.   [SPNW, FNA23] 4 Lyngbye's sedge
Carex macrocephala Willd. ex Spreng.   [SPNW, FNA23] 1 bighead sedge
Carex macrochaeta C. A. Mey.   [SPNW, FNA23] 0 Alaska long-awn sedge
Carex magellanica Lam. ssp. irrigua (Wahlenb.) Hiitonen, Suom,Kasvio   [SPNW, FNA23] 3 poor sedge
Carex media R. Br.   [SPNW, FNA23] 5 Montana sedge, Scandinavian sedge
Carex mertensii J. D. Prescott ex Bong.   [SPNW, FNA23] 1 Mertens' sedge
Carex micropoda C. A. Mey.   [SPNW, FNA23] 4 timberline sedge
Carex microptera Mack.   [SPNW, FNA23] 6 small-winged sedge
Carex nardina Fries   [SPNW, FNA23] 6 spikenard sedge
Carex nebrascensis Dewey   [SPNW, FNA23] 4 Nebraska sedge
Carex neurophora Mack.   [SPNW, FNA23] 1 alpine nerve sedge
Carex nigricans C. A. Mey.   [SPNW, FNA23] 0 black alpine sedge
Carex nudata W. Boott   [SPNW, FNA23] 6 torrent sedge
Carex obnupta L. H. Bailey   [SPNW, FNA23] 1 slough sedge
Carex obtusata Lilj.   [SPNW, FNA23] 0 blunt sedge
Carex pachycarpa Mack. 1 furrowed broomsedge
Carex pachystachya Cham. ex Steud.   [SPNW, FNA23] 7 thick-head sedge
Carex pallescens L.   [SPNW, FNA23] 1 pale green sedge
Carex pansa L. H. Bailey   [SPNW, FNA23] 1 sand sedge
Carex pauciflora Lightf.   [SPNW, FNA23] 0 few-flowered edge
Carex pellita Muhl. ex Willd.   [SPNW, FNA23] 1 woolly sedge
Carex pendula Huds.   [SPNW, FNA23] 0 pendulous sedge
Carex petasata Dewey   [SPNW, FNA23] 1 Liddon's sedge
Carex phaeocephala Piper   [SPNW, FNA23] 0 mountain hare sedge
Carex pluriflora Hultén   [SPNW, FNA23] 2 black bog sedge
Carex praeceptorum Mack.   [SPNW, FNA23] 3 teacher's sedge
Carex praegracilis W. Boott   [SPNW, FNA23] 0 clustered field sedge
Carex praticola Rydb.   [SPNW, FNA23] 3 northern meadow sedge
Carex preslii Steud.   [SPNW, FNA23] 0 Presl's sedge
Carex proposita Mack.   [SPNW, FNA23] 0 Smoky Mountain sedge
Carex raynoldsii Dewey   [SPNW, FNA23] 1 Raynolds' sedge
Carex retrorsa Schwein.   [SPNW, FNA23] 0 retrorse sedge
Carex rossii Boott   [SPNW, FNA23] 6 Ross' sedge
Carex rostrata Stokes   [SPNW, FNA23] 1 northern beaked sedge
Carex saxatilis L.   [SPNW, FNA23] 8 russet sedge, limestone sedge
Carex scirpoidea Michx. ssp. scirpoidea    [SPNW, FNA23] 8
Carex scirpoidea Michx. ssp. stenochlaena (Holm) Á. Löve & D. Löve   [SPNW, FNA23] 2 Alaska singlespike sedge
Carex scoparia Schkuhr ex Willd. var. scoparia    [SPNW, FNA23] 0 pointed broomsedge
Carex scopulorum Holm var. bracteosa (L. H. Bailey) F. J. Herm.   [SPNW, FNA23] 3 Sierra alpine sedge
Carex scopulorum Holm var. prionophylla (Holm) L. A. Standley   [SPNW, FNA23] 2 firethread sedge
Carex sheldonii Mack.   [FNA23] 0 Sheldon's sedge
Carex siccata Dewey   [SPNW, FNA23] 4 dry-spike sedge
Carex simulata Mack.   [SPNW, FNA23] 0 analogue sedge
Carex spectabilis Dewey   [SPNW, FNA23] 5 showy sedge
Carex stenoptila F.J. Herm.   [FNA23] 0
Carex stipata Muhl. ex Willd. var. stipata    [SPNW, FNA23] 3 sawbeak sedge, awl-fruited sedge
Carex straminiformis L. H. Bailey   [SPNW, FNA23] 0 Mt. Shasta sedge
Carex stylosa C. A. Mey.   [SPNW, FNA23] 3 long-style sedge
Carex subbracteata Mack.   [FNA23] 0
Carex subfusca W. Boott   [SPNW, FNA23] 3 rusty sedge
Carex sychnocephala Carey   [SPNW, FNA23] 0 many-headed sedge
Carex sylvatica Huds.   [SPNW, FNA23] 0 European woodland sedge
Carex tahoensis Smiley   [SPNW, FNA23] 1 Lake Tahoe sedge
Carex tenera Dewey var. tenera    [SPNW, FNA23] 0 quill sedge, slender sedge
Carex tenuiflora Wahlenb.   [SPNW, FNA23] 0 sparse-flower sedge
Carex tribuloides Wahlenb. var. tribuloides    [SPNW, FNA23] 1 blunt broom sedge
Carex tumulicola Mack.   [SPNW, FNA23] 0 foothill sedge
Carex unilateralis Mack.   [SPNW, FNA23] 0 one-sided sedge
Carex utriculata Boott   [SPNW, FNA23] 4 inflated sedge, beaked sedge, Northwest Territory sedge
Carex vallicola Dewey   [SPNW, FNA23] 2 valley sedge
Carex vernacula L. H. Bailey   [SPNW, FNA23] 1 foetid sedge
Carex vesicaria L.   [SPNW, FNA23] 0 oxbow sedge, inflated sedge
Carex viridula Michx. ssp. viridula    [SPNW] 10 greenish sedge
Carex vulpinoidea Michx   [SPNW, FNA23] 10 fox sedge
Carex zikae Roalson & Waterway   [Draft Revised H&C] 2 Zika's sedge
Cyperus acuminatus Torr. & Hook. ex Torr.   [FNA23, H&C] 2 sharp-pointed flatsedge, taper-tip flatsedge
Cyperus bipartitus Torr.   [FNA23] 2 shining flatsedge
Cyperus eragrostis Lam.   [FNA23] 1 tall flatsedge
Cyperus erythrorhizos Muhl.   [FNA23, H&C] 5 redroot flatsedge
Cyperus esculentus L. var. leptostachyus Boeckl.   [FNA23] 7 yellow nutgrass
Cyperus fuscus L.   [FNA23] 0 brown galingale
Cyperus lupulinus (Spreng.) Marcks ssp. lupulinus    [FNA23] 2 Great Plains flatsedge
Cyperus odoratus L.   [FNA23] 1 scented flatsedge
Cyperus schweinitzii Torr.   [FNA8, H&C] 2 sand flatsedge
Cyperus squarrosus L.   [FNA23] 6 awned flatsedge
Cyperus strigosus L.   [FNA23, H&C] 5 straw-colored flatsedge, false flatsedge
Dulichium arundinaceum (L.) Britton var. arundinaceum    [FNA23] 2 three-way sedge
Eleocharis acicularis (L.) Roem. & Schult.   [FNA23, H&C] 5 needle spikerush
Eleocharis atropurpurea (Retz.) J. & C. Presl   [FNA23] 2 purple spikerush
Eleocharis bella (Piper) Svenson   [FNA23, H&C] 2 pretty spikerush
Eleocharis coloradoensis (Britt.) Gilly   [FNA23] 2 dwarf spike-rush
Eleocharis engelmannii Steudel   [FNA23] 6 Engelman spikerush
Eleocharis macrostachya Britt.   [FNA23] 2 creeping spikerush
Eleocharis mamillata (H. Lindberg) H. Lindberg ssp. mamillata    [FNA23] 1
Eleocharis obtusa (Willd.) Schult.   [FNA23] 5 blunt spikerush
Eleocharis ovata (Roth) Roem. & Schult.   [FNA23, H&C in part] 3 ovoid spikerush
Eleocharis palustris (L.) Roem. & Schult.   [FNA23, H&C] 2 common spikerush
Eleocharis parvula (Roem. & Schult.) Link ex Bluff, Nees & Schauer   [FNA23] 4 little-head spikerush
Eleocharis quinqueflora (F. X. Hartmann) Schwarz   [FNA23] 5 few-flowered spike-rush
Eleocharis rostellata (Torr.) Torr.   [FNA23] 1 walking sedge, beaked spikerush
Eleocharis suksdorfiana Beauv.   [FNA23] 2 Suksdorf spikerush
Eriophorum angustifolium Honck. ssp. angustifolium    [FNA23] 1 many-spiked cottongrass
Eriophorum chamissonis C. A. Mey.   [FNA23] 7 Chamisso's cotton-grass, russet cottongrass
Eriophorum gracile W. D. J. Koch   [FNA23, H&C] 2 slender cottongrass
Eriophorum virginicum L.   [FNA23] 0 tawny cottongrass
Eriophorum viridicarinatum (Engelm.) Fernald   [FNA23, H&C] 1 tassel cottongrass
Isolepis cernua (Vahl) Roemer & Schultes   [FNA23] 3 low clubrush, low lateral clubrush
Isolepis setacea (L.) R. Br.   [FNA23] 1 bristle-leaf sedge, Eurasian bulrush
Kobresia myosuroides (Vill.) Fiori & Paol   [FNA23, H&C] 1 Pacific bog sedge, Bellard's kobresia
Lipocarpha aristulata (Coville) G. C. Tucker   [FNA23] 4 halfchaff sedge
Lipocarpha micrantha (Vahl) G. C. Tucker   [FNA23] 9 small-flowered halfchaff edge
Lipocarpha occidentalis (A. Gray) G. C. Tucker   [FNA23] 2 western halfchaff sedge
Rhynchospora alba (L.) Vahl   [FNA23, H&C] 5 white beakrush
Schoenoplectus acutus (Muhl. ex J. M. Bigelow) A. Love & D. Love var. acutus    [FNA23] 1 hardstem bulrush, viscous bulrush
Schoenoplectus acutus (Muhlenberg ex Bigelow) Á. Löve & D. Löve var. occidentalis (S. Watson) S. G. Smith   [FNA23] 3 common tule
Schoenoplectus americanus (Pers.) Volk. ex Schinz & R. Keller   [FNA23] 2 Olney's three-square bulrush
Schoenoplectus heterochaetus (A. Chase) J. Sojak   [FNA23] 2 slender bulrush
Schoenoplectus ×kuekenthalianus (Junge) D.H. Kent   [FNA23] 0
Schoenoplectus mucronatus (L.) Palla   [FNA23] 1 rough-seed bulrush, ricefield bulrush
Schoenoplectus pungens (Vahl.) Palla   [FNA23] 3 common three square, chairmaker's clubrush
Schoenoplectus saximontanus (Fern.) J. Raynal   [FNA23] 3 Rocky Mountain bulrush
Schoenoplectus subterminalis (Torr.) Sojak   [FNA23] 1 water clubrush, swaying clubrush
Schoenoplectus tabernaemontani (C. C. Gmel.) Palla   [FNA23] 7 soft-stem bulrush, great bulrush
Schoenoplectus triqueter (L.) Palla   [FNA23] 1 rounded three square
Scirpus atrocinctus Fernald   [FNA23] 1 common woolly sedge
Scirpus cyperinus (L.) Kunth   [FNA23] 4 cottongrass bulrush
Scirpus microcarpus J.& K. Presl   [FNA23, H&C] 4 small fruited bulrush, panicled bulrush
Scirpus pallidus (Britton) Fernald   [FNA23, H&C] 1 pale bulrush
Trichophorum cespitosum (L.) Schur   [FNA23] 5 tufted clubrush

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