POACEAE (Grass family)

Achnatherum hymenoides (Roemer & J.A. Schultes) Barkworth Indian ricegrass [US; California; Lassen County; T36N, R15E, S14; 40 deg. 59.28'N, 120 deg. 14.836'W; 5,400 feet][east side of Cold Spring Road, 0.1 miles southwest of Cold Spring; June 16, 2004; Collected by Chuck Walker; Identified by Mike Dolan; #CA242]

Achnatherum lettermanii (Vasey) Barkworth Letterman's needlegrass [US; California; Modoc County; T43N, R15E, S16; 41 deg. 35.312'N, 120 deg. 16.364'W; 8,100 feet][northeast slope of Cedar Mountain; August 28, 2004; Collected & identified by Chuck Walker; #CA115]

Achnatherum occidentale(Thurb. ex S. Wats.) Barkworth ssp. californicum (Merr. & Burtt-Davey ex Hall) Barkworth California needlegrass [US; California; Lassen County; T37N, R15E, S4; 41 deg. 06.376'N, 120 deg. 16.423'W; 6,575 feet][along dirt road; June 9, 2004; Collected by Chuck Walker; Identified by Mike Dolan; #CA01]

Achnatherum thurberianum (Piper) Barkworth Thurber's needlegrass [US; California; Modoc County; T40N, R11E, S13; 41 deg. 17.868'N, 120 deg. 39.357'W; 5,500 feet][in association with Juniperus occidentalis, Artemesia, Purshia tridentata, 0.5 miles west-south-west of Higgins Spring, Graven Ridge; June 22, 2005; Collected & identified by Chuck Walker; #CA252]

Aegilops cylindrica Host jointed goatgrass [US; Washington; Spokane County; Cheney; T23N, R41E, S13; 2,350 feet][along Highway 904, near S. Cheney Plaza Rd. (turnoff to Turnbull National Wildlife Refuge); July 18, 1998; Collected & identified by Chuck Walker; #WA87]

Agropyron desertorum (Fisch. ex Link) J.A. Schultes desert wheatgrass [US; Arizona; Yavapai County; Prescott; T14N, R2W, S35; 5,420 feet][north side of Highway 69, 100 m east of mile marker #295; April 17, 1996; Collected & identified by Chuck Walker; #AZ264]

Agrostis capillaris L. colonial bentgrass [US; Illinois; Jersey County; Grafton; T6N, R13W, S14; 440 feet][along patrol road, 200 m from east gate, Gilbert Lake, Two Rivers National Wildlife Refuge; June 18, 2000; Collected & identified by Chuck Walker; #IL10]

Agrostis elliottiana Schult. Elliott's bentgrass [US; Mississippi; Neshoba County; T12N, R13E, S6; 32 deg. 55.251'N, 89 deg. 0.515'W; 400 feet][along road near Headquarters of Nanih Waiya Wildlife Management Area; May 1, 2008; Collected & identified by Chuck Walker; #MS135]

Agrostis scabra Willd. rough bentgrass [US; Iowa; Fremont County; T68N, R41W, S18; 930 feet][on slope leading down to pond, 30 m north of Riverton Check Station, Riverton Wildlife Management Area; August 22, 1999; Collected & identified by Chuck Walker; #IA112]

Agrostis stolonifera L. creeping bentgrass [US; California; Modoc County; T43N, R12E, S7; 41 deg. 34.650'N, 120 deg. 37.583'W; 4,900 feet][along east side of outlet from Big Sage Reservoir; July 26, 2004; Collected by Chuck Walker; Identified by Mike Dolan; #CA79]

Alopecurus carolinianus Walt. Carolina foxtail [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 420 feet][low spot in mowed area, southwest of Abe Martin field, Southern Illinois University; May 26, 2001; Collected & identified by Chuck Walker; #IL144]

Alopecurus carolinianus Walt. Carolina foxtail [US; Mississippi; Sharkey County; T13N, R5W, S21; 32 deg. 57.825'N, 90 deg. 43.888'W; 95 feet][northwest corner of Cell 3B, Flooding Research Facility, six miles east-south-east of Anguilla; April 3, 2006; Collected & identified by Chuck Walker; #MS42]

Alopecurus pratensis L. meadow foxtail [US; Minnesota; St Louis County; Cherry; T57N, R19W, S26; 1,350 feet][meadow behind home at 3853 Highway 25, 0.25 miles south of Highway 37 (Cherry); June 3, 1997; Collected & identified by Chuck Walker; #MN16]

Ammophila breviligulata Fern. American beachgrass [US; Illinois; Cook County; Kenilworth; T42N, R13E, S21; 600 feet][beach on Lake Michigan, Elder Lane Park; May 27, 2004; Collected & identified by Chuck Walker; #IL650]

Andropogon gerardii Vitman big bluestem [US; Iowa; Fremont County; T68N, R42W, S32; 1,200 feet][end of loop in the upper picnic area, Waubonsie State Park; August 14, 1999; Collected & identified by Chuck Walker; #IA102]

Andropogon glomeratus (Walt.) B.S.P. var. glomeratus bushy bluestem [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][on bank above the Contraband Bayou, southwest of footbridge, McNeese State University; October 1, 1994; Collected & identified by Chuck Walker; #LA164]

Andropogon glomeratus (Walt.) B.S.P. var. hirsutior (Hack.) C. Mohr bushy bluestem [US; Louisiana; Cameron Parish; T11S, R10W, S22; 5 feet][along Ellis Moss Rd., 1.3 miles west of Highway 27, Choupique Area; October 10, 1994; Collected & identified by Chuck Walker; #LA168]

Andropogon ternarius Michx. var. ternarius splitbeard bluestem [US; Louisiana; Calcasieu Parish; Lake Charles; T19S, R8W, S20; 15 feet][north side of Beauregard Dr., 8 m west of Common St.; February 27, 2000; Collected & identified by Chuck Walker; #LA210]

Andropogon virginicus L. broomsedge bluestem [US; Illinois; Massac County; T15S, R4E, S19; 350 feet][north side of road; September 28, 2002; Collected by Romina Vidal Russell & Chuck Walker; Identified by Mike Mibb; #IL440]

Apera interrupta (L.) Beauv. dense silkybent [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 Eleocharis bolanderi , along 4WD road, 0.25 miles south of Clarks Valley Road; July 14, 2005; Collected by Lisa Anderson & Chuck Walker; Identified by Chuck Walker; #CA285]

Aristida adscensionis L. sixweeks threeawn [US; Arizona; La Paz County; T3N, R17W, S28; 1,580 feet][along north side of Highway #60, 200 m east of I-10; November 11, 1996; Collected & identified by Chuck Walker; #AZ411]

Aristida californica Thurb. ex S. Wats. var. glabrata Vasey Santa Rita threeawn [US; Arizona; Graham County; T9S, R26E, S5; 3,330 feet][along Highway 191, one mile south of its junction with Highway 266; May 21, 1996; Collected & identified by Chuck Walker; #AZ289]

Aristida purpurea Nutt. purple threeawn [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,360 feet][northwest quadrant of S. Montezuma St.-Aubrey St. intersection; May 15, 1996; Collected & identified by Chuck Walker; #AZ275]

Aristida ternipes Cav. spidergrass [US; Arizona; Yavapai County; Prescott; T14N, R2W, S27; 5,240 feet][along Highway #89 at its junction with Sundog Ranch Rd.; July 14, 1996; Collected & identified by Chuck Walker; #AZ333]

Arrhenatherum elatius (L.) Beauv. ex J.& K. Presl var. elatius tall oatgrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,260 feet][in Granite Creek by Aubrey St.; April 29, 1996; Collected & identified by Chuck Walker; #AZ270]

Avena barbata Pott ex Link slender oat [US; California; Trinity County; T33N, R12W, S8; 40 deg. 44.453'N, 123 deg. 13.071'W; 380 feet][Foothill community, rest stop on the north side of the Trinity River, on the south side of Highway #299, about two miles east of Big Bar; April 12, 2005; Collected & identified by Chuck Walker; #CA157]

Avena fatua L. wild oat [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,390 feet][alley between S. Montezuma St. and S. Cortez St., on the north side of E. Carleton St.; April 12, 1996; Collected & identified by Chuck Walker; #AZ261]

Avena sativa L. common oat [US; Arizona; Yavapai County; Prescott; T14N, R2W, S34; 5,260 feet][by mile marker #312 on Highway 89 (Sheldon St.); April 14, 1996; Collected & identified by Chuck Walker; #AZ263]

Avena sativa L. common oat [US; Mississippi; Washington County; Stoneville; T18N, R8W, S15; 33 deg. 24.703'N, 90 deg. 54.698'W; 125 feet][along east side of S. Deer Creek Dr. W, on the edge of a barley field; April 11, 2007; Collected & identified by Chuck Walker; #MS]

Beckmannia syzigachne (Steud.) Fern. American sloughgrass [US; California; Modoc County; T39N, R15E, S29; 41 deg. 11.564�N, 120 deg. 17.256'W; 6,220 feet][pond edge, on west side of dirt road, 1.5 miles northwest of Mahogany Ridge; July 16, 2005; Collected by Chuck Walker; Identified by Mike Dolan; #CA292]

Bothriochloa barbinodis (Lag.) Herter cane bluestem [US; Arizona; Yavapai County; Black Canyon City; T9N, R2E, S27; 2,120 feet][Greyhound Park, three miles north of Black Canyon City; February 1, 1993; Collected & identified by Chuck Walker; #AZ15]

Bothriochloa saccharoides (Sw.) Rydb. silver bluestem [US; Louisiana; Cameron Parish; Grand Lake; T12S, R8W, S17; 10 feet][along dirt road heading east from Highway #385, 0.3 miles north of Grand Lake; October 14, 1994; Collected & identified by Dr. James Brooks & Chuck Walker; #LA165]

Bothriochloa wrightii (Hack.) Henr. Wright's beardgrass [US; Florida; Monroe County; Key Colony; T65S, R33E, S33; 5 feet][along unpaved perimeter road on east side of Curry Hammocks; December 20, 1997; Collected & identified by Chuck Walker; #FL04]

Bouteloua curtipendula (Michx.) Torr. sideoats grama [US; Arizona; Yavapai County; T16N, R6W, S22; 5,320 feet][by corral in Cottonwood Canyon off Camp Wood Rd., six miles from Williamson Valley Rd., 22 miles from Prescott; September 17, 1995; Collected by Chuck Walker; Identified by Jim Manard; #AZ220]

Bouteloua gracilis (Willd. ex Kunth) Lag. ex Griffiths blue grama [US; Arizona; Yavapai County; T16N, R6W, S22; 5,320 feet][by corral in Cottonwood Canyon off Camp Wood Rd., six miles from Williamson Valley Rd., 22 miles from Prescott; September 17, 1995; Collected by Chuck Walker; Identified by Jim Manard; #AZ221]

Bouteloua hirsuta Lag. var. hirsuta hairy grama [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,360 feet][along curb, southwest quadrant of S. Marina St.-Carleton St. intersection; June 20, 1996; Collected & identified by Chuck Walker; #AZ319]

Bouteloua parryi (Fourn.) Griffiths Parry's grama [US; Arizona; Yavapai County; T17N, R2W, S11; 4,230 feet][in sand above Granite Creek & Verde River convergence; August 10, 1996; Collected & identified by Chuck Walker; #AZ356]

Bouteloua repens (Kunth) Scribn. & Merr. slender grama [US; Arizona; Yavapai County; T17N, R2W, S11; 4,230 feet][in sand above Granite Creek & Verde River convergence; August 10, 1996; Collected & identified by Chuck Walker; #AZ357]

Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. bearded shorthusk [US; Illinois; Johnson County; T11S, R2E, S28][edge of horse trail through mixed deciduous upland woods, near sandstone bluff base, Happy Hollow area in southwest portion of Ferne Clyffe State Park; July 9, 1992; Collected & identified by Mike Mibb; #707]

Briza minor L. little quakinggrass [US; Louisiana; Beauregard Parish; Bancroft; T5S, R13W, S25; 90 feet][east side of Highway #389, three miles north of Bancroft; April 28, 1994; Collected & identified by Chuck Walker; #LA70]

Briza minor L. little quakinggrass [US; Mississippi; Neshoba County; T12N, R13E, S6; 32 deg. 55.257'N, 89 deg. 0.435'W; 440 feet][along road near Headquarters of Nanih Waiya Wildlife Management Area; May 1, 2008; Collected & identified by Chuck Walker; #MS134]

Bromus berterianus Colla Chilean chess [US; Arizona; Yavapai County; Prescott; T13N, R2W, S15; 5,890 feet][along old Senator Highway, 0.5 miles from its southern terminus on to Senator Highway near Goldwater Lake; August 17, 1996; Collected & identified by Chuck Walker; #AZ366]

Bromus briziformis Fisch. & C.A. Mey. rattlesnake brome [US; California; Lassen County; T33N, R16E, S35; 40 deg. 40.998'N, 120 deg. 7.525'W; 5,120 feet][sagebrush flat, 5 m south of Sagehen Spring, Shinn Ranch Road; June 6, 2005; Collected & identified by Chuck Walker; #CA237]

Bromus carinatus Hook. & Arn. California brome [US; California; Lassen County; T37N, R15E, S4; 41 deg. 6.356'N, 120 deg. 16.423'W; 6,600 feet][along 4WD road, 2.5 miles south of Blue Lake; September 1, 2004; Collected & identified by Paul Schmidt & Chuck Walker; #CA122]

Bromus catharticus Vahl rescuegrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,360 feet][along sidewalk at 323 S. Montezuma St.; March 30, 1996; Collected & identified by Chuck Walker; #AZ257]

Bromus commutatus Schrad. meadow brome [US; Illinois; Williamson County; Carterville; T9S, R1E, S13; 450 feet][in fill mounds 5 m east of the northernmost pond (of two), southeast of Coal Dr.-Technology Dr., College of Applied Science & Arts; May 11, 2001; Collected & identified by Chuck Walker; #IL282]

Bromus commutatus Schrad. meadow brome [US; Illinois; Jackson County; Carbondale; T9S, R1W, S27; 440 feet][growing along trail in the northwest portion of the Green Earth Woodland Preserve; May 24, 2002; Collected & identified by Chuck Walker; #IL121]

Bromus diandrus Roth ripgut brome [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,380 feet][vacant lot at 435 S.Montezuma St.; March 31, 1996; Collected & identified by Chuck Walker; #AZ258]

Bromus hordeaceus L. soft brome [US; Washington; Spokane County; Spokane; T25N, R44E, S19; 2,150 feet][Dishman Hills Natural Area; July 3, 1998; Collected & identified by Chuck Walker; #WA67]

Bromus inermis Leyss. ssp. inermis smooth brome [US; Washington; Spokane County; Spokane; T25N, R43E, S29; 2,260 feet][Manito Park, near E 22nd Ave.-Tekoa St. intersection; June 5, 1998; Collected & identified by Chuck Walker; #WA31]

Bromus kalmii Gray arctic brome [US; Illinois; Union County; T13S, R2W, S; 640 feet][forest; June 11, 2003; Collected by Eric Lees & Chuck Walker; Identified by Chuck Walker; #IL483]

Bromus pubescens Muhl. ex Willd. hairy woodland brome [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 420 feet][west side of the Illinois Central Gulf Railroad tracks, due west of Building 1640, Lot #25, Southern Hills; June 3, 2001; Collected & identified by Chuck Walker; #IL155]

Bromus rubens L. red brome [US; Arizona; Yavapai County; Prescott; T14N, R2W, S35; 5,420 feet][along road at 1831 Highway 69 (Frontier Village); April 21, 1996; Collected & identified by Chuck Walker; #AZ267]

Bromus sterilis L. poverty brome [US; Washington; Spokane County; Spokane; T25N, R43E, S28; 2,300 feet][beside asphalt road leading up (going south) from the baseball field, Lincoln Park; July 12, 1998; Collected & identified by Chuck Walker; #WA79]

Bromus tectorum L. cheatgrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,380 feet][east side of the 400 block of S. Montezuma St.; April 22, 1996; Collected & identified by Chuck Walker; #AZ268]

Bromus tectorum L. cheatgrass [US; Arkansas; Clay County; Corning; T21N, R7E, S2; 36 deg. 29.90'N, 90 deg. 36.74'W; 295 feet][ca. six miles northwest of Corning, ca. 0.6 miles east of Clay County Rd. #187, on east side of Clay County Rd. 135 (where it turns north), just south of the Missouri state line; May 17, 2006; Collected & identified by Danny Skojac; #01299]

Calamagrostis acutiflora (Schrad.) Rchb. feather reed grass [Origin: Europe] [US; Illinois; Jackson county; T9S, R1W, S21; 37 deg. 42.986'N, 89 deg. 13.396'W; 440 feet][ornamental planting on southwest corner of Rehn Hall, Southern Illinois University; September 20, 2003; Collected & identified by Chuck Walker; #IL535]

Calamagrostis canadensis (Michx.) Beauv. bluejoint [US; Wisconsin; Ashland county; T45N, R2W, S15; 1,180 feet][Glen Colver farm, east side of Highway 169, one mile north of Becker Road, 4.5 miles northeast of Mellen; September 8, 2001; Collected & identified by Chuck Walker; #WI16]

Cenchrus echinatus L. southern sandbur [US; Florida; Dade County; North Miami; T52S, R42E, S16; 5 feet][northwest quadrant of Highway 1-NE 163rd intersection; December 17, 1997; Collected & identified by Chuck Walker; #FL02]

Cenchrus gracillimus Nash slender sandbur [US; Florida; Broward County; Fort Lauderdale; T50S, R42E, S10; 5 feet][along Florida East Coast tracks, 20 m south of New River; December 16, 1997; Collected & identified by Chuck Walker; #FL01]

Cenchrus longispinus (Hack.) Fern. mat sandbur [US; Iowa; Fremont County; T68N, R42W, S33; 1,175 feet][along dirt road, 5 m from east gate to Camp Wa Shawtee; August 16, 1999; Collected & identified by Chuck Walker; #IA111]

Cenchrus spinifexCav. coastal sandbur [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R9W, S25; 15 feet][near 7th Day Adventist Church at 1537 Country Club Rd.; August 30, 1997; Collected & identified by Chuck Walker; #LA196]

Chasmanthium latifolium (Michx.) Yates Indian woodoats [US; Illinois; Calhoun County; Batchtown; T11S, R2W, S36; 435 feet][along Mississippi River, 5 m downstream from boat launch, Batchtown Division, Two Rivers National Wildlife Refuge; August 20, 2000; Collected & identified by Chuck Walker; #IL60]

Chasmanthium latifolium (Michx.) Yates Indian woodoats [US; Arkansas; Drew County; Collins; T14S, R4W, S32; 33 deg. 26.821'N, 91 deg. 32.454'W ; 120 feet][on bank west 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; #AR17]

Chasmanthium latifolium (Michx.) Yates Indian woodoats [US; Arkansas; Drew County; Collins; T14S, R5W, S26; 33 deg. 27.23'N, 91 deg. 35.23'W ; 170 feet][along west side of Collins-Snyder Rd., 0.6 miles south of Upper Weir Rd., (road leads to Camping Area 1, Cut-Off Creek Wildlife Management Area); May 28, 2006; Collected & identified by Chuck Walker; #AR37]

Chloris X subdolichostachya Muell. (pro sp.) shortspike windmill grass [US; Louisiana; Cameron Parish; Grand Lake; T12S, R8W, S17; 10 feet][dirt road heading east from Highway #385, 0.3 miles north of Grand Lake; October 14, 1994; Collected & identified by Dr. James Brooks & Chuck Walker; #LA171]

Chloris verticillata Nutt. tumble windmill grass [US; Illinois; Jackson County; Carbondale; T9S, R1W, S15; 390 feet][along curb on the east side of Wall St., due west of the basketball courts, Crispus Attucks Park; June 9, 2001; Collected & identified by Chuck Walker; #IL164]

Chloris virgata Sw. feather fingergrass [US; Arizona; Yavapai County; Prescott; T14N, R2W, S33; 5,340 feet][east side of Montezuma St., 10 m north of Merit Ave.; August 18, 1996; Collected & identified by Chuck Walker; #AZ373]

*Cinna arundinaceae L. common woodreed [US; Illinois; Jackson County; T10S, R2W, S; 450 feet][Cedar Lake trail; September 29, 2001; Collected by Heidi Hartman; Identified by Chuck Walker; #IL256]

Cortaderia araucana Stapf pampas grass [US; Mississippi; Washington County; T18N, R7W, S22; 32 deg. 23.913'N, 90 deg. 54.348'W; 120 feet][on the west side of where the Illinois Central Railroad tracks pass over Highway #82 (on the later's south side), Leland; September 21, 2008; Collected & identified by Chuck Walker; #MS163]

Cynodon dactylon (L.) Pers. Bermudagrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][along curb leading up to parking lot from north end of footbridge, McNeese State University; April 14, 1994; Collected & identified by Chuck Walker; #LA60]

Dactylis glomerata L. ssp. glomerata orchardgrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S9; 5,430 feet][along Manzanita Creek, downstream from low water crossing on Pima Dr.; May 11, 1996; Collected & identified by Chuck Walker; #AZ274]

Dactyloctenium aegyptium (L.) Willd. Egyptian grass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R9W, S27; 20 feet][Cobra St.-Lafonette Rd. intersection; August 30, 1997; Collected & identified by Chuck Walker; #LA197]

Danthonia intermedia Vasey timber oatgrass [US; Arizona; Coconino County; T23N, R7E, S32; 10,500 feet][800 m down trail from saddle between Humphreys Peak and Agassiz Peak; July 27, 1997; Collected & identified by Chuck Walker; #AZ487]

Danthonia spicata (L.) Beauv. ex Roemer & J.A. Schultes poverty oatgrass [US; Illinois; Saline County; T10S, R7E, S16; 800 feet][open bluff, Old Stone Face; May 29, 2002; Collected by Kim Micklus & Chuck Walker; Identified by Chuck Walker; #IL287]

Danthonia spicata (L.) Beauv. ex Roemer & J.A. Schultes poverty oatgrass [US; Arkansas; Hot Spring County; 34 deg. 25.752'N, 92 deg. 56.803'W; T3S, R18W, S32; 440 feet][south side of Highway #171, south of Diamondhead Golf Course, April 23, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #AR08]

Diarrhena americana Beauv. American beakgrain [US; Illinois; Johnson County; Simpson; T12S, R4E][low woods; September 21, 2002; Collected & identified by Chuck Walker; #IL436]

Dichanthelium acuminatum var. lindheimeri (Nash) Gould & C.A. Clark Lindheimer panicgrass [US; Illinois; Pope County; Eddyville; T12S, R5E][sandy soil, edge of rock ledge on southeast-facing hill; September 21, 2002; Collected & identified by Chuck Walker; #IL437]

Dichanthelium boscii (Poir.) Gould & C.A. Clark Bosc's panicgrass [US; Illinois; Johnson County; Eddyville; T11S, R2E, S28][edge of horse trail through upland mixed-deciduous woodland, near a sandstone bluff base, Happy Hollow area in the southwest portion of Ferne Clyffe State Park; July 9, 1992; Collected & identified by Mike Mibb; #708]

Dichanthelium clandestinum (L.) Gould deertongue [US; Illinois; Pope County; Eddyville; T11S, R6E, S34; 500 feet][sandy soil, seasonally flooded, on north bank of Lusk Creek; June 8, 2002; Collected & identified by Chuck Walker; #IL295]

Dichanthelium dichotomum (L.) Gould cypress panicgrass [US; Illinois; Pope County; Eddyville; T12S, R5E, S][sandy soil, edge of rock ledge on southeast-facing hill; September 21, 2002; Collected & identified by Chuck Walker; #IL438]

Dichanthelium laxiflorum (Lam.) Gould openflower rosette grass [US; Illinois; Pope County; Eddyville; 500 feet][August 9, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL418]

Dichanthelium laxiflorum (Lam.) Gould openflower rosette grass [US; Mississippi; Grenada County; T22N, R5E, S2; 33 deg. 48.297'N, 89 deg. 44.488'W; 220 feet][southwest portion of Grenada Lake, Hugh White State Park; April 15, 2006; Collected by Chuck Walker; Identified by Danny Skojac; #MS74]

Dichanthelium scabriusculum (Ell.) Gould & C.A. Clark woolly rosette grass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S18; 15 feet][lawn on north side of Kingston St., 5 m east of Lake St.; March 24, 2000; Collected & identified by Chuck Walker; #LA225]

Dichanthelium scoparium (Lam.) Gould velvet panicum [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 & identified by Chuck Walker; #AR26]

Dichanthelium sphaerocarpon(Ell.) Gould var. isophyllum (Scribn.) Gould & C.A. Clark roundseed panicgrass [US; Illinois; Pope County; Eddyville; T11S, R6E, S33; 540 feet][along forest trail, 100 m above Lusk Creek: June 8, 2002; Collected & identified by Chuck Walker; #IL296]

Dichanthelium villosissimum (Nash) Freckmann whitehair rosette grass [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 440 feet][woods, 20 m south of tennis courts, Southern Hills; May 21, 2001; Collected & identified by Chuck Walker; #IL135]

Digitaria ciliaris (Retz.) Koel. southern crabgrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][vacant lot behind 4314 Ryan St.; August 16, 1997; Collected & identified by Chuck Walker; #LA190]

Digitaria ischaemum (Schreb.) Muhl. smooth crabgrass [US; Pennsylvania; Erie County; Erie][along Bayfront Highway near the Public Dock; September 13, 1998; Collected & identified by Chuck Walker; #PA10]

Digitaria sanguinalis (L.) Scop. hairy crabgrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,380 feet][rock garden at 333 S. Montezuma St.; August 14, 1996; Collected & identified by Chuck Walker; #AZ363]

Distichlis spicata (L.) Greene var. nana Beetle inland saltgrass [US; California; Modoc County; T42N, R12E, S12; 41 deg. 29.262'N, 120 deg. 31.930'W; 4,390 feet][along dirt road leading to farm field at junction of 4th St. E. & Josephine St.; June 19, 2004; Collected & identified by Chuck Walker; #CA17]

Echinochloa colona (L.) Link jungle rice [US; Louisiana; Jefferson Davis Parish; T9S, R6W, S7; 25 feet][ditch south of Gilson Rd.-Newcomer Rd. intersection; November 18, 1994; Collected & identified by Chuck Walker; #LA175]

Echinochloa crus-galli (L.) Beauv. barnyardgrass [US; Texas; Orange County; Mauriceville; 25 feet][south side of Highway #12, three miles northeast of Mauriceville; November 4, 1994; Collected & identified by Dr. James Brooks & Chuck Walker; #TX01]

Echinochloa frumentacea Link. billion-dollar grass [US; Illinois; Calhoun; Batchtown; T11S, R2W, S31; 430 feet][east side of Moist Soil Unit, Batchtown Division, Two Rivers National Wildlife Refuge; August 11, 2000; Collected & identified by Chuck Walker; #IL55]

Echinochloa muricata (Beauv.) Fern. var. microstachya Wieg. rough barnyardgrass [US; Mississippi; Sharkey County; T13N, R5W, S21; 100 feet][Inside pondberry experimental Cell 11A, Flooding Research Facility, six miles east-south-east of Anguilla; June 13, 2006; Collected & identified by Chuck Walker; #MS101]

Echinochloa muricata (Beauv.) Fern. var. muricata rough barnyardgrass [US; Illinois; Calhoun County; T11S, R2W, S36; 435 feet][5 m downstream from boat launch along Mississippi River, Batchtown Division, Two Rivers National Wildlife Refuge; August 20, 2000; Collected & identified by Chuck Walker; #IL61]

Echinochloa walteri (Pursh) Heller coast cockspur grass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][vacant lot behind 4314 Ryan St.; August 15, 1997; Collected & identified by Chuck Walker; #LA189]

Eleusine indica (L.) Gaertn. Indian goosegrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][vacant lot behind 4314 Ryan St.; August 16, 1997; Collected & identified by Chuck Walker; #LA191]

Elymus canadensis L. Canada wildrye [US; Arizona; Yavapai County; Prescott; T14N, R2W, S28; 5,350 feet][creekbed on north side of Whipple St., north of Campbell Ave.; June 16, 1996; Collected & identified by Chuck Walker; #AZ316]

Elymus caninus (L.) L. bearded wheatgrass [US; Washington; Spokane County; Cheney; T23N, R41E, S13; 2,350 feet][along Highway 904, near S. Cheney Plaza Rd. (turnoff to Turnbull National Wildlife Refuge); July 18, 1998; Collected & identified by Chuck Walker; #WA88]

Elymus elymoides (Raf.) Swezey squirreltail [US; Arizona; Yavapai County; Prescott; T14N, R1W, S31; 5,700 feet][vacant lot next door (downhill) to 4745 Hornet Dr.; May 9, 1996; Collected & identified by Chuck Walker; #AZ273]

Elymus glaucus Buckl. ssp. glaucus blue wildrye [US; California; Modoc County; Alturas; T42N, R12E, S8; 41 deg. 29.294'N, 120 deg. 29.380'W; 4,400 feet][along road, west side of Road 56 (Parker Creek Road); June 27, 2004; Collected & identified by Chuck Walker; #CA21]

Elymus hystrix L. eastern bottlebrush grass [US; Illinois; Jackson County; T10S, R3W, S1; 700 feet][along south side of road, 20 m southeast of the Little Grand Canyon Picnic Area; May 25, 2002; Collected & identified by Chuck Walker; #IL284]

Elymus repens (L.) Gould quackgrass [US; Washington; Spokane County; Cheney; T23N, R41E, S13; 2,350 feet feet][along Highway 904, near S. Cheney Plaza Rd. (turnoff to Turnbull National Wildlife Refuge); July 18, 1998; Collected & identified by Chuck Walker; #WA89]

Elymus � saundersii Vasey (pro sp.) [elymoides � trachycaulus]Saunders' wheatgrass [US; Arizona; Yavapai County; Prescott; T14N, R2W, S33; 5,340 feet][vacant lot across the street from 433 Miller Valley Rd.; April 20, 1996; Collected & identified by Chuck Walker; #AZ266]

Elymus sierrae Gould Sierra wildrye [US; California; Shasta County; T36N, R5E, S29; 40 deg. 56.09'N, 121 deg. 25.33'W; 3,620 feet][in association with Juniperus occidentalis, Artemesia spp., Quercus douglasii, two miles northwest of Saint John Ranch, east of Hogback Ridge; June 27, 2005; Collected by Lisa Anderson & Chuck Walker; Identified by Chuck Walker; #CA264]

Elymus trachycaulus (Link) Gould ex Shinners ssp. subsecundus (Link) A.& D. L�ve slender wheatgrass [US; Arizona; Coconino County; T23N, R7E, S32; 10,500 feet][800 m down trail from saddle between Humphreys Peak and Agassiz Peak; July 27, 1997; Collected & identified by Chuck Walker; #AZ488]

Elymus trachycaulus (Link) Gould ex Shinners ssp. trachycaulus slender wheatgrass [US; California; Modoc County; Alturas; T42N, R12E, S14; 41 deg. 28.608'N, 120 deg. 33.407'W; 4,360 feet][along dirt road between fence and railroad tracks, northwest quadrant of intersection of Road #60 (West St.) & railroad tracks; June 20, 2004; Collected & identified by Chuck Walker; #CA18]

Elymus villosus Muhl. ex Willd. hairy wildrye [US; Illinois; Monroe County; Fults; T4S, R10W, S27; 38 deg. 9.566'N, 90 deg. 11.440'W; 740 feet][along trail through woods, Fults Hill Prairie Nature Preserve; July 22, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL392]

Elymus virginicus L. var. virginicus Virginia wildrye [US; Iowa; Fremont County; T68N, R41W, S19; 900 feet][10 m west of spillway from Riverton Wildlife Management Area, along J46, two miles west of Riverton; July 18, 1999; Collected & identified by Chuck Walker; #IA66]

Elymus virginicus L. var. virginicus Virginia wildrye [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 5 feet][north bank of Contraband Bayou, 5 m west of footbridge, McNeese State University; April 16, 2000; Collected & identified by Chuck Walker; #LA250]

Elymus virginicus L. var. virginicus Virginia wildrye [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 & identified by Chuck Walker; #AR21]

Eragrostis cilianensis (All.) Vign. ex Janchen stinkgrass [US; Arizona; Yavapai County; Paulden; T17N, R1W, S40; 4,240 feet][southeast corner of old barn, 1.5 miles downstream from Granite Creek-Verde River convergence; August 23, 1996; Collected & identified by Chuck Walker; #AZ378]

Eragrostis hypnoides (Lam.) B.S.P. teal lovegrass [US; Illinois; Massac County; 350 feet][August 5, 2002; Collected by Nate Small & Chuck Walker; Identified by Chuck Walker; #IL413]

Eragrostis intermedia A.S. Hitchc. plains lovegrass [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,380 feet][along road by 315 S. 269Montezuma St.; April 26, 1996; Collected & identified by Chuck Walker; #AZ269]

Eragrostis japonica (Thunb.) Trin. pond lovegrass [US; Louisiana; Calcasieu Parish; T9S, R8W, S16; 15 feet][4 m south of English Bayou, under bridge on Highway 171; April 20, 2000; Collected & identified by Chuck Walker; #LA257]

Eragrostis minor Host. little lovegrass [US; Illinois; Jackson County; Carbondale; T9S, R1W, S16; 395 feet][north of Fisher St., east side of Illinois Central Gulf Railroad tracks; June 4, 2001; Collected & identified by Chuck Walker; #IL158]

Eragrostis pectinacea (Michx.) Nees ex Steud. var. pectinacea tufted lovegrass [US; Washington; Spokane County; Spokane; T25N, R43E, S28; 2,300 feet][in lawn along curb, two doors uphill from Napa St.-E 18th Ave. intersection; July 12, 1998; Collected & identified by Chuck Walker; #WA80]

Eragrostis pectinacea (Michx.) Nees ex Steud. var. pectinacea tufted lovegrass [US; Mississippi; Washington County; Stoneville; T18N, R7W, S10; 125 feet][ca. 0.1 miles east of Experiment Station Road at the U.S. Forest Service Southern Hardwoods Laboratory (432 Stoneville Road), on east side of facility near storage sheds in gravel substrate; July 10, 2006; Collected & identified by Danny Skojac; #01364]

Eragrostis pilosa (L.) Beauv. Indian lovegrass [US; California; Modoc County; T43N, R15E, S15; 41 deg. 35.254�N, 120 deg. 15.188'W; 6,440 feet][in seasonal drainage to Soldier Creek, along Road 43N07, east of Cedar Mountain; July 30, 2005; Collected & identified by Chuck Walker; #CA311]

Eriochloa acuminata (J. Presl) Kunth var. acuminata tapertip cupgrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S19; 15 feet][vacant lot behind 4314 Ryan St.; August 16, 1997; Collected & identified by Chuck Walker; #LA192]

Eriochloa contracta A.S. Hitchc. prairie cupgrass [US; Illinois; Jackson County; Carbondale; T9S, R1W, S21; 37 deg. 42.969'N, 89 deg. 13.401'W; 450 feet][along chain link fence along walkway from parking lot on west side of Lawson Hall, Southern Illinois University; September 15, 2003; Collected by Chuck Walker; Identified by Mike Mibb; #IL534]

Eustachys paspaloides (Vahl) Lanza & Mattei ssp. caribaea (Spreng.) Nowack Caribbean fingergrass [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R9W, S27; 20 feet][along Cobra St., 80 m south of Country Club Dr.; August 30, 1997; Collected & identified by Chuck Walker; #LA198]

Festuca idahoensis Elmer Idaho fescue [US; Washington; Spokane County; Spokane; T25N, R43E, S28; 2,250 feet][in lawn underneath shrub in Manito Park, along Tekoa St.; July 13, 1998; Collected & identified by Chuck Walker; #WA82]

Festuca idahoensis Elmer Idaho fescue [US; California; Siskiyou County; T46N, R3E, S36; 41 deg. 46.916'N, 121 deg. 34.303'W; 4,300 feet][rock outcrop in sagebrush habitat, east side of dirt road leading to Gold Digger Pass, west of Devil's Homestead; June 18, 2005; Collected & identified by Chuck Walker; #CA247]

Festuca occidentalis Hook. western fescue [US; California; Modoc County; T42N, R5E, S12; 41 deg. 24.326'N 121 deg. 20.488'W; 4,400 feet][along 4WD road, 0.2 miles west of Lava Campgrounds, Road 41N07; May 28, 2005; Collected & identified by Chuck Walker; #CA225]

Festuca ovina L. sheep fescue [US; Illinois; Pope County; Eddyville; T12SN, R5E, S23; 37 deg. 27.791'N, 88 deg. 38.045'W; 440 feet][at pull-off on dirt road, 10 m north of Highway 145; June 25, 2003; Collected by Yohanes Honu, Eric Lees, and Chuck Walker; Identified by Chuck Walker & Yohanes Honu; #IL503]

Festuca paradoxa Desv. clustered fescue [US; Iowa; Fremont County; T68N, R42W, S29; 1,000 feet][along Bridge Trail, 25 m from footbridge, Waubonsie State Park; August 15, 1999; Collected & identified by Chuck Walker; #IA107]

Festuca subverticillata (Pers.) Alexeev. nodding fescue [US; Illinois; Jackson County; Carbondale; T9S, R1W, S28; 440 feet][woods, 20 m south of tennis courts, Southern Hills; May 21, 2001; Collected & identified by Chuck Walker; #IL136]

Glyceria arkansana Fern. Arkansas mannagrass [US; Mississippi; Washington County; T19N, R7W, S27; 120 feet][along south side of road in Delta Experimental Forest, about three miles north of Stoneville; April 27, 2006; Collected by Danny Skojac & Chuck Walker; Identified by Dr. Charles Bryson; #MS85]