CYPERACEAE (Sedge family)

Carex abrupta Mackenzie abruptbeak sedge [US; California; Lassen County; T36N, R14E, S12; 41 deg. 18.553'N, 120 deg. 16.601'W; 6,000 feet] [in creek, about a mile northwest of Dodge Spring; June 20, 2005; Collected & identified by Chuck Walker; #CA251]

Carex abscondita Mackenzie thicket sedge [US; Mississippi; Bolivar County; T22N, R7W, S33; 130 feet] [ca. twelve miles west of Highway 61 at Boyle, on Highway MS446, near Skene on Dahomey National Wildlife Refuge; in woods immediately north of Refuge headquarters, bottomland hardwood forest; May 25, 2006; Collected & Identified by Danny Skojac; #01312]

Carex albonigra Mackenzie blackandwhite sedge [US; Arizona; Coconino County; T23N, R7E, S32; 10,500 feet] [800 m down trail from saddle between Mount Humphreys & Mount Agassiz; July 27, 1997; Collected & identified by Chuck Walker; #AZ485]

Carex alma Bailey sturdy sedge [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,360 feet] [Granite Creek at the Leroux St. low water crossing; May 5, 1996; Collected & identified by Chuck Walker; #AZ272]

Carex annectens (Bickn.) Bickn. yellowfruit sedge [US; Illinois; Hardin County; 575 feet] [wooded hillside; July 3, 2003; Collected by Eric Lees & Chuck Walker; Identified by Mike Mibb; #IL507]

Carex aquatilis Wahlenb. var. aquatilis water sedge [US; California; Modoc County; T40N, R15E, S16; 41 deg. 17.817'N, 120 deg. 13.042'W; 7,680 feet] [along Slide Creek near Slide Creek Trail-Summit Trail intersection; July 2, 2005; Collected & identified by Chuck Walker; #CA268]

Carex aquatilis Wahlenb. var. dives (Holm) K�kenth. Sitka sedge [US; California; Humboldt County; T10N, R1E, S2; 41 deg. 16.774'N, 124 deg. 1.730'W; 80 feet] [along Redwood Creek Trail, east side of Highway #101, ≈ 1.5 miles southeast of Orick; April 14, 2005; Collected & identified by Chuck Walker; #CA168]

Carex aureolensis Steud. gold sedge [US; Mississippi; Sharkey County; T13N, R5W, S16; 32 deg. 57.94'N, 90 deg. 43.48'W; 95 feet] [at intersection of Theobald Rd. and road that borders on the west side of Sixteenth Section Land; June 23, 2006; Collected by Chuck Walker; Identified by Danny Skojac & Chuck Walker; #MS108]

Carex blanda Dewey eastern woodland sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S22; 410 feet] [east side of bike path from Grand St., at its junction with the bike path from Wall St., Greenway/Bikeway; May 25, 2001; Collected & identified by Chuck Walker; #IL143]

Carex caroliniana Schwein. Carolina sedge [US; Illinois; Gallatin County; T10S, R9E, S34; 37 deg. 36.773�N, 88 deg. 11.971�W; 360 feet] [north side of Ozee Landing Lane, west side of the Saline River, east of Highway 1; August 25, 2002; Collected & identified by Chuck Walker; #IL426]

Carex cherokeensis Schwein. Cherokee sedge [US; Mississippi; Washington County; T15N, R7W, S9; 33 deg. 9.773'N, 90 deg. 55.736'W; 105 feet] [along Bayou Trail, Leroy Percy State Park; November 6, 2005; Collected & identified by Chuck Walker; #MS25]

Carex comosa Boott longhair sedge [US; Mississippi; Coahoma County; Clarksdale; T26N, R3W, S35; 34 deg. 4.528'N, 90 deg. 29.292'W; 155 feet] [growing on Taxodium logs in lake; eight miles southeast of Clarkddale; seven miles southeast of Highway 49-US 61 junction, at Home Cypress Hunting Club at Dublin; May 3, 2006; Collected & Identified by Danny Skojac; #01279]

Carex corrugata Fern. prune-fruit sedge [US; Mississippi; Washington County; T19N, R7W, S33; 33 deg. 27.302'N, 90 deg. 55.529'W; 115 feet] [USDA Compound, Delta Experimental Forest, about three miles north of Stoneville; April 10, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #MS63]

Carex crus-corvi Shuttlw. ex Kunze ravenfoot sedge [US; Mississippi; Sharkey County; T13N, R5W, S20; 32 deg. 57.890'N, 90 deg. 43.962'W; 95 feet] [outside gate to Flooding Research Facility, six miles east-south-east of Anguilla, April 26, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #MS80]

Carex decomposita Muhl. cypressknee sedge [US; Mississippi; Coahoma County; Clarksdale; T26N, R3W, S35; 34 deg. 4.528'N, 90 deg. 29.292'W; 155 feet] [growing on Taxodium logs in lake; eight miles southeast of Clarkddale; seven miles southeast of Highway 49-US 61 junction, at Home Cypress Hunting Club at Dublin; May 3, 2006; Collected & Identified by Danny Skojac; #01280]

Carex digitalis Willd. slender woodland sedge [US; Illinois Hardin County; 500 feet] [dry, southwest-facing slope; July 3, 2003; Collected by Eric Lees & Chuck Walker; Identified by Chuck Walker; #IL508]

Carex digitalis Willd. var. macropoda Fern. slender woodland sedge [US; Mississippi; Grenada County; 240 feet][campgrounds, southwest portion of Grenada Lake, Hugh White State Park; T22N, R5E, S2; April 15, 2006; Collected by Chuck Walker; Identified by Dr. Charles T. Bryson, Danny Skojac, & Chuck Walker; #MS67]

Carex douglasii Boott Douglas' sedge [US; California; Lassen County; T37N, R12E, S11; 41 deg. 3.573'N, 120 deg. 33.062'W; 5,630 feet] [along 4WD road, 0.4 miles northeast of Bill Allen Spring; July 25, 2005; Collected by Lisa Anderson & Chuck Walker; Identified by Mike Dolan; #CA302]

Carex festucacea Schkuhr ex Willd. fescue sedge [US; Illinois; Gallatin County; T10S, R9E, S34; 37 deg. 36.773'N, 88 deg. 11.970'W; 360 feet] [along north side of Ozee Landing Lane, about 400 m west of Ozee Landing (Saline River); June 20, 2003; Collected by Eric Lees & Chuck Walker; Identified by Mike Mibb; #IL495]

Carex festucacea Schkuhr ex Willd. fescue sedge [US; Arkansas; Lincoln County; Star City; T9S, R7W, S22; 33 deg. 54.501'N, 91 deg. 46.317'W; 196 feet] [along south side of Highway #293; April 24, 2008; Collected & Identified by Chuck Walker; #AR87]

Carex foenea Willd. var. foenea dryspike sedge [US; Wisconsin; Ashland County; T45N, R2W, S1; 1,160 feet] [gravel pit area above Catalino's Bog, on the east side of Tuler Forks and Highway 169, six miles north-northwest of Tyler Forks; September 8, 2001; Collected & identified by Chuck Walker; #WI17]

Carex frankii Kunth Frank's sedge [US; Illinois; Jackson County; T9S, R1W, S32; 37 deg. 41.938'N, 89 deg. 13.863'W; 430 feet] [Evergreen Park, along the north side of Carbondale Reservoir near the picnic area; July 8, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL342]

Carex gigantea Rudge giant sedge [US; Illinois; Pulaski County; 330 feet] [August 14, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL422]

Carex gracilescens Steud. slender looseflower sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S27; 430 feet] [north side of electrical plant, 200 m north of E. Pleasant Hill Road, 400 m east of S. Wall St.; April 18, 2002; Collected by Chuck Walker; Identified by Mike Mibb; #IL265]

Carex grayi Carey Gray�s sedge [US; Illinois; Calhoun County; T13S, R1W, S10; 420 feet] [along forest road leading to Little Swan Moist Soil Unit (#4), Two Rivers National Wildlife Refuge; July 12, 2000; Collected & identified by Chuck Walker; #IL30]

Carex grayi Carey Gray's sedge [US; Mississippi; Tunica County; Tunica; T5S, R11W, S28; 34 deg. 37.574'N, 90 deg. 22.189'W; 185 feet] [bottomland hardwood forest; ca. four miles south of Tunica; one mile south of junction Highway 61-MS 4; one mile east of Highway 61 on Hurt Road (south of road); May 3, 2006; Collected & Identified by Danny Skojac; #01255]

Carex hirsutella Mackenzie fuzzy wuzzy sedge [US; Illinois; Pulaski County; T14S, R2E, S23; 37 deg. 19.934'N, 89 deg. 12.058'W; 490 feet] [open, south-facing hillside (slope = 16.2%), two miles west-north-west of Wetaug; August 17, 2002; Collected & identified by Chuck Walker; #IL423]

Carex hoodii Boott Hood's sedge [US; California; Modoc County; T40N, R12E, S30; 41 deg. 16.54'N, 120 deg. 38.45'W; 5,170 feet] [along shore on northern edge of Bayley Reservoir, south of 4WD road; May 26, 2005; Collected by Wes Barry & Chuck Walker; Identified by Chuck Walker; #CA217]

Carex hoodii Boott Hood's sedge [US; California; Modoc County; T43N, R14E, S13; 41 deg. 33.538�N, 120 deg. 17.912'W; 5,800 feet] [along Thoms Creek, Cedar Pass Campgrounds; July 29, 2005; Collected & identified by Chuck Walker; #CA307]

Carex hyalina Boott tissue sedge [US; Mississippi; Tunica County; Tunica; T5S, R11W, S28; 34 deg. 37.574'N, 90 deg. 22.189'W; 185 feet] [ca. four miles south of Tunica; one mile south of junction Highway 61-MS 4; one mile east of Highway 61 on Hurt Road (south of road); May 3, 2006; Collected & Identified by Danny Skojac; #01254]

Carex joorii Bailey cypress swamp sedge [US; Arkansas; Pike County; T6S, R25W, S17; 34 deg. 14.065'N, 93 deg. 41.479'W; 560 feet] [along shore of Lake Greeson, Kirby Landing Public Use Area; September 4, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #AR50]

Carex leavenworthii Dewey Leavenworth's sedge [US; Illinois; Jackson County; T9S, R1W, S22; 37 deg. 43.75'N, 89 deg. 12.235'W; 390 feet] [behind store at 816 E. Main, on north side of Highway 13 (westbound); June 8, 2003; Collected by Chuck Walker; Identified by Mike Mibb; #IL482]

Carex lenticularis Michx. var. impressa (Bailey) L.A. Standley lakeshore sedge [US; California; Modoc County; T40N, R15E, S16; 41 deg. 18.553'N, 120 deg. 16.601'W; 6,820 feet] [open area, seasonal creek, near Soup Spring; Modoc National Forest; July 2, 2005; Collected & identified by Chuck Walker; #CA269]

Carex lenticularis var. lipocarpa (Holm) L.A. Standley Kellogg�s sedge [US; Arizona; Yavapai County; Prescott; T13N, R3W, S7; 5,900 feet] [10 m downstream from waterfall on Aspen Creek, between High Valley Ranch Lot 41 and Vista Rd.; March 25, 1999; Collected & identified by Chuck Walker; #AZ506]

Carex louisianica Bailey Louisiana sedge [US; Illinois; Johnson County; 360 feet] [bottomland woods; July 13, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL354]

Carex louisianica Bailey Louisiana sedge [US; Mississippi; Grenada County; T22N, R5E, S4; 33 deg. 48.372'N, 89 deg. 46.522'W; 160 feet] [South Abutment Public Use Area, Grenada Lake; April 16, 2006; Collected & identified by Chuck Walker; #MS75]

Carex lupulina Muhl. ex Willd. hop sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S26; 390 feet] [in ditch on south side of Dogwood Rd., 200 m south of Drury Creek; May 30, 2001; Collected & identified by Chuck Walker; #IL150]

Carex lupulina Muhl. ex Willd. hop sedge [US; Arkansas; Drew County; Collins; T14S, R4W, S32; 33 deg. 26.398'N, 91 deg. 32.076'W; 120 feet] [along trail southeast of concrete walk-way across Cut-Off Creek, Camping Area 1, Cut-Off Creek Wildlife Management Area; May 28, 2006; Collected by Chuck Walker; Identified by Dr. Charles T. Bryson & Danny Skojac; #AR27]

Carex lurida Wahlenb. shallow sedge [US; Illinois; Williamson County; Carterville; T9S, R1E, S10; 420 feet] [along water's edge, Mary Logan Fitness & Nature Trail, John A. Logan Junior College; May 16, 2001; Collected & identified by Chuck Walker; #IL130]

Carex lurida Wahlenb. shallow sedge [US; North Carolina; Cherokee County; 35 deg. 14.11'N, 84 deg. 13.64'W; 1,600 feet] [Nantahala National Forest, ca. three miles north of Violet and ca. six miles northeast of confluence of Shuler Creek and Hiwasse River on Burrell Mountain Rd., at base of Wolf Ridge, headwaters of Shuler Creek; June 1, 2006; Collected & identified by Danny Skojac; #01323]

Carex lurida Wahlenb. shallow sedge [US; Illinois; Pope County; T15S, R7E, W; 400 feet] [wooded hillside; October 5, 2002; Collected by Chuck Walker; Identified by Mike Mibb; #IL445]

Carex muehlenbergii Schkuhr ex Willd. Muhlenberg's sedge [US; Illinois; Union County; La Rue; T11S, R3W, S21; 37 deg. 32.529'N, 89 deg. 26.323'W; 350 feet] [within drainage bed leading west, La Rue-Pine Hills National Natural Landmark; September 14, 2002; Collected & identified by Chuck Walker; #IL430]

Carex nebrascensis Dewey Nebraska sedge [US; California; Modoc County; T43N, R12E, S7; 41 deg. 34.663'N, 120 deg. 37.585'W; 4,900 feet] [along outlet from Big Sage Reservoir; July 26, 2004; Collected by Matt Minarchek & Chuck Walker; Identified by Marti Butow & Chuck Walker; #CA80]

Carex normalis Mackenzie greater straw sedge [US; Iowa; Fremont County; Riverton; T68N, R41W, S18; 925 feet] [along asphalt road, 50 m north of the boat ramp, Riverton Wildlife Management Area; May 30, 1999; Collected & identified by Chuck Walker; #IA06]

Carex occidentalis Bailey western sedge [US; Arizona; Yavapai County; Prescott; T13N, R2W, S16; 5,780 feet] [along Granite Creek, 3/4 mile up Schoolhouse Gulch Rd., from Highway 89; July 6, 1996; Collected & identified by Chuck Walker; #AZ327]

Carex oligocarpa Schkuhr ex Willd. richwoods sedge [US; Illinois; Schuyler County; T11N, R2W, S8; 40 deg. 04' N, 90 deg. 39' W; 584 feet][Angie and Jeff Langner's property, 0.8 miles south of Scott's Mill Road, 5.6 miles southwest of Rushville; June 7, 2001; Collected by Jon Rebman; Identified by Loy R. Phillippe (ILLLS) August 2003; #7389]

Carex oligosperma Michx. fewseed sedge [US; Wisconsin; Ashland County; T45N, R2W, S1; 1,160 feet][Catalino's Bog, on the east side of Tuler Forks and Highway 169, six miles north-north-west of Tyler Forks; June 20, 1979; Collected & identified by Dr. Beth Middleton; s.n.]

Carex oxylepis Torr. & Hook. sharpscale sedge [US; Mississippi; Warren County; T17N, R5E, S29] [on east side of Fox Road, Bluff Experimental Forest, loessal bluff hills; April 13, 2006; Collected & identified by Danny Skojac; #1232]

Carex praegracilis W. Boott clustered field sedge [US; California; Humboldt County; T11N, R1E, S35; 41 deg. 17.379'N, 124 deg. 1.733'W; 40 feet] [along Redwood Creek Trail, east side of Highway #101, & #8776; two miles northeast of Orick; April 14, 2005; Collected & identified by Chuck Walker; #CA169]

Carex retroflexa Muhl. ex Willd. reflexed sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 440 feet] [south side of concrete drive leading up to Building 1575 from Lot #26, Southern Hills; May 7, 2001; Collected & identified by Chuck Walker; #IL118]

Carex rosea Schkuhr ex Willd. rosy sedge [US; Illinois; Alexander County; T14S, R3W, S12; 37 deg. 18.938'N, 89 deg. 23.280'W; 440 feet] [open, east-facing hillside (slope = 31.05%), behind Lindsey Cemetery, two miles south-south-east of McClure; August 17, 2002; Collected & identified by Chuck Walker; #IL424]

Carex scabrata Schwein. eastern rough sedge [US; Wisconsin; Ashland County; T45N, R2W, S1; 1,160 feet] [Catalino's Bog, on the east side of Tuler Forks and Highway 169, six miles north-north-west of Tyler Forks, T45N, R2W, S1; September 8, 2001; Collected & identified by Chuck Walker; #WI18]

Carex scoparia Schkuhr ex Willd. broom sedge [US; Illinois; Jackson County; 420 feet] [along intermittent stream; June 11, 2003; Collected by Eric Lees & Chuck Walker; Identified by Chuck Walker; #IL484]

Carex shortiana Dewey Short�s sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 450 feet] [on embankment, 10 m south of Southern Hills Dr., 7 m west of Wall St.; May 10, 2001; Collected & identified by Chuck Walker; #IL119]

Carex socialis Mohlenbrock & Schwegm. low woodland sedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 450 feet] [edge of woods on south side of Southern Hills Dr., south of Lot 27, Southern Hills; May 13, 2001; Collected & identified by Chuck Walker; #IL128]

Carex socialis Mohlenbrock & Schwegm. low woodland sedge [US; Mississippi; Tunica County; Tunica; T5S, R11W, S28; 34 deg. 37.574'N, 90 deg. 22.189'W; 185 feet] [bottomland hardwood forest; ca. four miles south of Tunica; one mile south of junction Highway 61-MS 4; one mile east of Highway 61 on Hurt Road (south of road); May 3, 2006; Collected & Identified by Danny Skojac; #01253]

Carex spectabilis Dewey showy sedge [US; California; Siskiyou County; McCloud; T39N, R2W, S12; 41 deg. 14.653'N, 122 deg. 1.342'W; 3,280 feet] [along north side of McCloud River, Fowler Campgrounds, one mile east of McCloud; June 12, 2004; Collected & identified by Chuck Walker; #CA07]

Carex squarrosa L. squarrose sedge [US; Illinois; Gallatin County; T10S, R9E, S34; 37 deg. 36.776'N, 88 deg. 11.973'W; 360 feet] [along north side of Ozee Landing Lane, about 400 m west of Ozee Landing (Saline River); June 20, 2003; Collected by Eric Lees & Chuck Walker; Identified by Chuck Walker; #IL496]

Carex squarrosa L. squarrose sedge [US; Arkansas; Drew County; Collins; T14S, R4W, S32; 33 deg. 26.892'N, 91 deg. 32.386'W ; 120 feet] [along trail east of concrete walk-way across Cut-Off Creek, Camping Area 1, Cut-Off Creek Wildlife Management Area; May 28, 2006; Collected & identified by Chuck Walker; #AR29]

Carex tenera Dewey quill sedge [US; Wisconsin; Columbia County; T12N, R9E, S27; 780 feet] [dry, sandy prairie, Portage Power Plant property, ca. four miles southeast of Portage; May 31, 1975; Collected & identified by Dr. Beth Middleton; s.n.]

Carex texensis (Torr.) Bailey Texas sedge [US; Mississippi; Washington County; Leland; T18N, R7W, S23; 33 deg. 24.07'N, 90 deg. 53.89'W; 125 feet] [three blocks southeast of Broad Street, on the corner of Garrison Street and Turner Street, persisting in lawn at 403 Garrison Street (private residence); May 4, 2006; Collected & Identified by Danny Skojac; #01284]

Carex triangularis Boeckl. eastern fox sedge [US; Mississippi; Tunica County; Tunica; T5S, R11W, S21; 34 deg. 37.574' N, 90 deg. 22.189'W; 185 feet] [bottomland hardwood forest; ca. four miles south of Tunica; one mile south of junction Highway 61-MS 4; 1.5 miles east of Highway 61 on Hurt Road (north of road); May 3, 2006; Collected & Identified by Danny Skojac; #01263]

Carex tribuloides Wahlenb. blunt broom sedge [US; Illinois; Jackson County] [along intermittent stream; June 11, 2003; Collected by Eric Lees & Chuck Walker; Identified by Mike Mibb; #IL485]

Carex tribuloides Wahlenb. blunt broom sedge [US; Mississippi; Sharkey County; T13N, R5W, S16; 32 deg. 58.03'N, 90 deg. 43.39'W; 95 feet] [at intersection of Theobald Rd. and road that borders on the west side of Sixteenth Section Land; June 23, 2006; Collected by Chuck Walker; Identified by Danny Skojac & Chuck Walker; #MS107]

Carex typhina Michx. cattail sedge [US; Wisconsin; Columbia County; T12N, R9E, S27; 780 feet] [river bottom forest, Portage Power Plant property, ca. four miles southeast of Portage; July 3, 1978; Collected & identified by Dr. Beth Middleton; s.n.]

Carex utriculata Boott Northwest Territory sedge [US; Wyoming; Park County; T53N, R112W; ca. 7,900 feet] [seasonally flooded plain in monoculture, Pelican Creek floodplain, Yellowstone National Park; July 20, 2003; Collected & identified by N. E. Saunders; s.n.]

Carex virescens Muhl. ex Willd. ribbed sedge [US; North Carolina; Cherokee County; Carterville; 35 deg. 9.22'N, 84 deg. 9.97'W 1,640 feet] [northwest end of Hiwassee Lake, ca. 4.5 miles northeast of NC Highway 294 on Hiwassee Dam Access Rd. (SR 1314) in the gated community of Bear Paw, ca. 0.5 miles south of the Hiwassee Lake Dam; near intersection of Frank Lane and Judy Lane, mid to upper slope, mixed hardwoods and pine forest; June 1, 2006; Collected & identified by Danny Skojac; #01317]

Carex vulpinoidea Michx. var. vulpinoidea fox sedge [US; Illinois; Jackson County; 420 feet] [along intermittent stream; June 11, 2003; Collected by Eric Lees & Chuck Walker; Identified by Mike Mibb; #IL486]

Carex vulpinoidea Michx. var. vulpinoidea fox sedge [US; Mississippi; Washington County; T19N, R7W, S33; 33 deg. 27.353'N, 90 deg. 55.465'W; 115 feet] [USDA Compound, Delta Experimental Forest, about three miles north of Stoneville; April 10, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #MS62]

Cyperus acuminatus Torr. & Hook. ex Torr. tapertip flatsedge [US; Illinois; Calhoun County; Brussels; T13S, R1W, S16; 420 feet] [south of water in Office Moist Soil Unit, north of Two Rivers National Wildlife Refuge Office; June 14, 2000; Collected & identified by Chuck Walker; #IL02]

Cyperus amuricus Maxim. Asian flatsedge [US; Pennsylvania; Erie County; Erie; 570 feet] [south side of Bayfront Highway near the Public Dock; September 13, 1998; Collected & identified by Chuck Walker; #PA08]

Cyperus croceus Vahl Baldwin's flatsedge [US; Mississippi; Sharkey County; T13N, R5W, S20; 32 deg. 57.086�N, 90 deg. 44.165�W; 110 feet] [in seasonally flooded portion of Block 2, Sharkey Restoration Research and Demonstration Site, 1.5 miles east of Anguilla; July 22, 2008; Collected & identified by Aaron Lancaster, Chris Kirk & Chuck Walker; #MS142]

Cyperus erythrorhizos Muhl. redroot flatsedge [US; Illinois; Calhoun County; T12S, R1W, S19; 425 feet] [along inlet of middle Swan Lake, leading to Pump Station, Two Rivers National Wildlife Refuge; October 2, 2000; Collected & identified by Chuck Walker; #IL96]

Cyperus esculentus L. chufa flatsedge [US; Illinois; Jackson County; Carbondale; T9S, R1W, S32; 37 deg. 41.803'N, 88 deg. 14.070'W; 450 feet] [ten meters northwest of the Carbondale Reservoir; July 20, 2003; Collected & identified by Chuck Walker; #IL517]

Cyperus fendlerianus Boeckl. Fendler�s flatsedge [US; Arizona; Yavapai County; Prescott; T13N, R2W, S15; 6,140 feet] [turn-off (and dirt road) just north of entrance to Goldwater Lake; August 17, 1996; Collected & identified by Chuck Walker; #AZ369]

Cyperus iria L. ricefield flatsedge [US; Mississippi; Washington County; Stoneville; T18N, R7W, S10; 125 feet] [ca. 0.1 miles east of Experiment Station Road, at U.S. Forest Service Southern Hardwoods Laboratory (432 Stoneville Road), on east side of facility in lawn near storage and out buildings; June 26, 2006; Collected & identified by Danny Skojac; #01356]

Cyperus papyrus L. papyrus, bulrush, paper plant [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 37 deg. 42.883'N, 89 deg. 13.328'W; 450 feet] [Main House, Plant Biology Greenhouse, Southern Illinois University; January 11, 2004; Collected by Chuck Walker; Identified by Richard Cole; #IL574]

Cyperus planifolius L.C. Rich. flatleaf flatsedge [US; Florida; Broward County; Sunrise; T50S, R40E, S4; 5 feet] [north bank of North New River, near entrance to Markham County Park; December 28, 1997; Collected & identified by Chuck Walker; #FL19]

Cyperus pseudovegetus Steud. marsh flatsedge [US; Mississippi; Washington County; T15N, R7W, S9; 33 deg. 10.213'N, 90 deg. 55.835'W; 105 feet] [along edge of ditch, along road leading northeast from the alligator pond, Leroy Percy State Park; November 6, 2005; Collected & identified by Chuck Walker; #MS23]

Cyperus pseudovegetus Steud. marsh flatsedge [US; Mississippi; Sharkey County; T13N, R5W, S21; 32 deg. 57.797'N, 90 deg. 43.841'W; 100 feet] [in pondberry experimental Cell 8, Flooding Research Facility, six miles east-south-east of Anguilla; June 6, 2006; Collected & identified by Chuck Walker; #MS97]

Cyperus retrorsus Chapman pine barren flatsedge [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 10 feet] [south bank of Contraband Bayou, twenty meters west of footbridge, McNeese State University; October 1, 1994; Collected & identified by Chuck Walker; #LA166]

Cyperus retrorsus Chapman pine barren flatsedge [US; North Carolina; Cherokee County; 1,600 feet] [dry mid-slope site dominated by oak-hickory-pine forest; northwest end of Hiwassee Lake, about 4.5 miles northeast of Highway 294 on Hiwassee Dam Access Road (SR 1314) in the gated community of Bear Paw; collection site Judy Lane; July 23, 2006; Collected & identified by Danny Skojac; #01391]

Cyperus rotundus L. nutgrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet] [front lawn of Baptist Student Center at 4328 Ryan St.; August 15, 1997; Collected & identified by Chuck Walker; #LA188]

Cyperus rotundus L. nutgrass [US; Mississippi; Washington County; T18N, R7W, S10; 33 deg. 25.789'N, 90 deg. 54.603'W; 125 feet] [along west side of Experimental Farm Rd., 0.25 miles north of Stoneville; August 17, 2008; Collected & identified by Chuck Walker; #MS155]

Cyperus strigosus L. strawcolored flatsedge [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 10 feet] [south bank of Contraband Bayou, 20 m west of footbridge, McNeese State University; September 30, 1994; Collected & identified by Chuck Walker; #LA163]

Cyperus strigosus L. strawcolored flatsedge [US; Illinois; Calhoun County; Brussels; T13S, R1W, S16; 420 feet] [south of water, Office Moist Soil Unit, north of Two Rivers National Wildlife Refuge Office; July 2, 2000; Collected & identified by Chuck Walker; #IL23]

Cyperus surinamensis Rottb. tropical flatsedge [US; Florida; Broward County; Sunrise; T50S, R40E, S4; 5 feet] [north bank of North New River, near entrance to Markham County Park; December 28, 1997; Collected & identified by Chuck Walker; #FL20]

Eleocharis acicularis (L.) Roemer & Schultes needle spikerush [US; Illinois; Williamson County; Carterville; T9S, R1E, S13; 440 feet] [west side of Carbon Dr., northwest quadrant of Coal Dr.-Carbon Dr. intersection, College of Applied Science & Arts, Southern Illinois University; May 11, 2001; Collected & identified by Chuck Walker; #IL123]

Eleocharis bella (Piper) Svens. beautiful spikerush [US; California; Modoc County; T45N, R16E, S11; 41 deg. 36.860�N, 120 deg. 6.357�W; 4,580 feet] [along margin of alkali scald in sagebrush habitat, eight miles northeast of Cedarville; May 14, 2005; Collected & identified by Chuck Walker; #CA201]

Eleocharis bolanderi Gray Bolander's spikerush [US; California; Lassen County; T37N, R14E, S29; 41 deg. 2.23'N, 120 deg. 24.55'W; 5,670 feet] [in seasonally wet area with Apera interrupta, along 4WD, 0.25 miles south of Clarks Valley Road; July 14, 2005; Collected by Lisa Anderson & Chuck Walker; Identified by Chuck Walker; #CA287]

Eleocharis engelmannii Steud. Engelmann�s spikerush [US; Illinois; Calhoun County; Brussels; T13S, R1W, S16; 420 feet] [south of water in Office Moist Soil Unit, north of Two Rivers National Wildlife Refuge Office; June 14, 2000; Collected & identified by Chuck Walker; #IL03]

Eleocharis erythropoda Steud. bald spikerush [US; Illinois; Cook County; Glencoe; T42N, R12E, S1; 670 feet] [south side of County Line Rd., Marquette Rd.-County Line Rd. intersection; May 29, 2004; Collected & identified by Chuck Walker; #IL651]

Eleocharis flavescens (Poir.) Urban yellow spikerush [US; Alabama; Montgomery County; Montgomery; T16N, R17E, S35; 165 feet] [drainage ditch behind Greyhound Bus Station, 950 West South Blvd; September 12, 1998; Collected & identified by Chuck Walker; #AL02]

Eleocharis montana (Kunth) Roemer & J.A. Schultes mountain spikerush [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R9W, S12; 15 feet] [along Minton Dr. (runs parallel to & south of Giovannia St.); March 24, 2000; Collected & identified by Chuck Walker; #LA226]

Eleocharis montevidensis Kunth sand spikerush [US; Arizona; Cochise County; T19S, R29E, S22; 5,600 feet] [edge of Rucker Creek, by Rucker Campgrounds; May 20, 1996; Collected by Chuck Walker; Identified by Elizabeth Carrillo & Chuck Walker; #AZ288]

Eleocharis obtusa (Willd.) J.A. Schultes blunt spikerush [US; California; Modoc County; T40N, R12E, S3; 41 deg. 25.589'N, 120 deg. 36.967'W; 5,000 feet] [pond edge, Westside allotment; June 28, 2004; Collected by Matt Minarchek & Chuck Walker; Identified by Chuck Walker; #CA26]

Eleocharis obtusa (Willd.) J.A. Schultes blunt spikerush [US; Mississippi; Sharkey County; T13N, R5W, S20; 32 deg. 57.816'N, 90 deg. 43.835'W; 100 feet] [Flooding Research Facility, six miles east-south-east of Anguilla, April 8, 2006; Collected & identified by Chuck Walker; #MS50]

Eleocharis ovata (Roth) Roemer & J.A. Schultes ovate spikerush [US; Illinois; Williamson County; Carterville; T9S, R1E, S13; 440 feet] [west side of Carbon Dr., northwest quadrant of Coal Dr.-Carbon Dr. intersection, College of Applied Science & Arts, Southern Illinois University; May 11, 2001; Collected & identified by Chuck Walker; #IL124]

Eleocharis palustris (L.) Roemer & J.A. Schultes common spikerush [US; Arizona; Apache County; T5N, R31E, S16; 7,890 feet] [north side of Luna Lake; May 23, 1996; Collected & identified by Chuck Walker; #AZ306]

Eleocharis parishii Britt. Parish�s spikerush [US; Arizona; Yavapai County; Paulden; T17N, R1W, S7; 4,200 feet] [along Verde River, 1.5 miles downstream from its convergence with Granite Creek; August 23, 1996; Collected & identified by Chuck Walker; #AZ377]

Eriophorum virginicum L. tawny cottongrass [US; Wisconsin; Ashland County; T45N, R2W, S1; 1,160 feet] [Catalino's Bog, on the east side of Tuler Forks and Highway 169, six miles north-north-west of Tyler Forks; September 8, 2001; Collected by Chuck Walker; Identified by Dr. Beth Middleton & Chuck Walker; #WI22]

Fimbristylis autumnalis (L.) Roemer & J.A. Schultes slender fimbry [US; Illinois; Massac County; 350 feet] [August 5, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL414]

Lipocarpha maculata (L.) (Michx.) Torr. American halfchaff sedge [US; Illinois; Massac County; 350 feet] [August 5, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL415]

Rhynchospora corniculata (Lam.) Gray shortbristle horned beaksedge [US; Mississippi; Washington County; T19N, R7W, S33; 33 deg. 27.53'N, 90 deg. 55.47'W; 115 feet] [along side of road in Delta Experimental Forest, about three miles north of Stoneville; September 24, 2005; Collected by Chuck Walker; Identified by Danny Skojac; #MS04]

Rhynchospora corniculata (Lam.) Gray shortbristle horned beaksedge [US; Mississippi; Sharkey County; T13N, R5W, S21; 32 deg. 57.683'N, 90 deg. 43.834'W; 100 feet] [in south side of pondberry experimental Cell 8, Flooding Research Facility, six miles east-south-east of Anguilla; June 8, 2006; Collected & identified by Chuck Walker; #MS100]

Rhynchospora latifolia (Baldw. ex Ell.)Thomas sandswamp whitetop [US; Florida; Broward County; Sunrise; T50S, R40E, S4; 5 feet] [along path around lake in Markham County Park; Dec 31, 1997; Collected & identified by Chuck Walker; #FL38]

Schoenoplectus acutus (Muhl. ex Bigelow) A.& D. L�ve hardstem bulrush [US; Arizona; Yavapai County; Paulden; T17N, R2W, S11; 4,300 feet][pool at headwaters of Verde River, 30 m above its confluence with Granite Creek; August 10, 1996; Collected & identified by Chuck Walker; #AZ361]

Schoenoplectus acutus (Muhl. ex Bigelow) var. occidentalis (S. Wats.) S.G. Sm. tule [US; California; Modoc County; T43N, R12E, S7; 41 deg. 34.65'N, 120 deg. 37.63'W W; 4,900 feet] [along west side of outlet from Big Sage Reservoir; July 26, 2004; Collected by Matt Minarchek & Chuck Walker; Identified by Chuck Walker; #CA85]

Schoenoplectus acutus (Muhl. ex Bigelow) var. occidentalis (S. Wats.) S.G. Sm. tule [US; California; Lassen County; T36N, R15E, S14; 40 deg. 59.271'N, 120 deg. 14.799'W; 5,400 feet] [west side of pond edge, east side of Cold Spring Road, 0.1 miles southwest of Cold Spring; June 16, 2005; Collected by Chuck Walker; Identified by Mike Dolan & Chuck Walker; #CA246]

Schoenoplectus americanus (Pers.) Volk. ex Schinz & R.Keller chairmaker�s bulrush [US; Arizona; Yavapai County, Prescott; T13N, R2W, S4; 5,330 feet] [in Granite Creek, 20 m downstream from the bridge leading to Mile High Middle School; June 15, 1996; Collected & identified by Chuck Walker; #AZ315]

Schoenoplectus fluviatilis (Torr.) M.T. Strong river bulrush [US; Wisconsin; Columbia County, Portage; T12N, R9E, S34; about 780 feet] [wet sedge meadow, Columbia Energy Center, two miles southeast of Portage; June 19, 1971; Collected & identified by Jerry Schwartzmeier; #227]

Schoenoplectus pungens (Vahl) Palla var. pungens common threesquare [US; Oregon; Lake County; T41S, R20E, S23; 41 deg. 59.617'N, 120 deg. 19.758'W; 4,720 feet] [along shore of Goose Lake, Goose Lake State Recreation Area; September 4, 2004; Collected & identified by Chuck Walker; #OR02]

Schoenoplectus tabernaemontani (K.C. Gmel.) Palla softstem bulrush [US; Illinois; Calhoun County; Batchtown; T11S, R2W, S31; 430 feet][south side of road, 1/2 mile east of boat launch on Mississippi River, Batchtown Division, Two Rivers National Wildlife Refuge; September 13, 2000; Collected & identified by Chuck Walker; #IL81]

Scirpus cyperinus (L.) Kunth woolgrass [US; Illinois; Pope County; Eddyville; 680 feet] [August 9, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL419]

Scirpus georgianus Harper Georgia bulrush [US; Illinois; Jackson County; Carbondale; T10S, R1W, S4; 400 feet] [west side of Springer Ridge Rd., in low flat area north of Bosky Dell; May 24, 2001; Collected & identified by Chuck Walker; #IL141]

Scirpus microcarpus J. & K. Presl panicled bulrush [US; Arizona; Yavapai County; Prescott; T13N, R2W, S9; 5,490 feet] [Granite Creek, base of Kuhne Hill (across road from entrance to Haisly Homestead); June 3, 1993; Collected & identified by Chuck Walker; #AZ104]

Scirpus pendulus Muhl. rufous bulrush [US; Illinois; Williamson County; Carterville; T9S, R1E, S13; 440 feet] [northeast edge of the northernmost pond (of 2), southeast of Coal Dr.-Technology Dr. intersection; May 11, 2001; Collected & identified by Chuck Walker; #IL127]