[Specimen details]

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Lake Co. : Bug Springs.
Reproductive State Fertile
Collector R. F. Daubenmire
with J. Daubenmire
Collection Date 07 May 1988
Accession Number 201643
Image 201643.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Pasco Co. : Along FL 52, 1.1 mi. E of the junction with C-587; ca. 4 mi. W of Fivay. T25S, R17E, Sec. 10, NE¼ of NE¼. 28° 19' 0" N 82° 31' 0" W
Description Large colony.
Habitat Wet ditch.
Reproductive State Fertile
Collector B. F. Hansen 9889
with R.P. Wunderlin, G.L. Robinson
Collection Date 31 May 1984
Accession Number 177954
Image 177954.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Alachua Co. : University of Florida. Gainesville; along a road to the Agricultural Experiment area near Lake Alice. 29° 39' 5" N 82° 18' 38" W
Habitat Roadside.
Reproductive State Fertile
Collector R. R. Smith
Collection Date 13 Apr 1963
Accession Number 52461
Image 52461.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Pinellas Co. : Brooker Creek Preserve. Ca. 2.5 mi. NE of Oldsmar. T28S, R16E, Sec. 12, NW¼. 28° 2' 3" N 82° 39' 54" W
Habitat Margin of a small cypress [Taxodium] head in ca. 1 ft. of water.
Reproductive State Fertile
Collector B. F. Hansen 12057
with R.P. Wunderlin, P. Dooris
Collection Date 29 Apr 1993
Accession Number 208199
Image 208199.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Lake Co. : Along C-561, at a small stream; 2 mi. S of Astatula. T21S, R26E, Sec. 8, NW¼ of NW¼. 28° 42' 35" N 81° 43' 58" W
Habitat Swampy woods along a creek.
Reproductive State Fertile
Collector B. F. Hansen 8166
with R.P. Wunderlin, D.R. Richardson
Collection Date 23 Mar 1981
Accession Number 154628
Image 154628.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Hillsborough Co. : Tampa By-pass Canal, just N of Buffalo Avenue [Dr. Martin Luther King, Jr. Boulevard]. 27° 58' 55" N 82° 27' 0" W
Habitat Canal banks in shallow water.
Reproductive State Fertile
Collector T. F. Rochow
Collection Date 24 Apr 1981
Accession Number 155525
Image 155525.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Volusia Co. : Bulow Creek State Park. Ca. 0.8 km SE of the Old Dixie Highway and Walter Boardman Lane junction. 29° 23' 56" N 81° 7' 42" W
Description Densely cespitose, culms ascending.
Habitat Seepage-fed basin swamp.
Reproductive State Fertile
Collector J. M. Kunzer 1724
Collection Date 10 May 2006
Accession Number 243181
Image 243181.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Walton Co. : Along FL 20, near the bridge over Trout Creek, ca. 2 mi. W of Basin Bayou.
Habitat Ditch.
Reproductive State Fertile
Collector G. Wilhelm 9342
with M. Wilhelm
Collection Date 28 Jun 1981
Accession Number 157949
Image 157949.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Hernando Co. : Weeki Wachee Springs State Park. On the S river bank, along the attraction.
Habitat Spring run.
Reproductive State Fertile
Collector E. Gandy
Collection Date 19 Apr 2010
Accession Number 259969
Image 259969.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Brevard Co. : Buck Lake Conservation Area. NE of Blake Lee Road, ca. 1 mi. N of FL 46, and 2.2 mi. NW of I-95. T21S, R34E, Sec. 11. 29° 10' 15" N 81° 2' 19" W
Habitat Red maple [Acer rubrum]/Ash [Fraxinus]/Mixed oak hammock.
Reproductive State Fertile
Collector C. Slaughter 17238
Collection Date 17 Apr 2009
Accession Number 251673
Image 251673.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Polk Co. : Near the shore of Lake Hatchineha, near Poinciana. 28° 10' 0" N 81° 25' 0" W
Habitat Under a cypress [Taxodium] canopy, along a creek.
Reproductive State Fertile
Collector C. MacGregor
Collection Date 12 Apr 2000
Accession Number 225706
Image 225706.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: R. J. Eaton, 1960
Locality USA. Florida , Seminole Co. : In the southern outskirts of Sanford. 28° 48' 2" N 81° 16' 23" W
Habitat Scrub land.
Reproductive State Fertile
Collector G. R. Cooley 7565
with R.J. Eaton, J.D. Ray, Jr.
Collection Date 03 May 1960
Accession Number 18889
Image 18889.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Sumter Co. : Lake Okahumpka, areound the boat landing; just S of FL 44, ca. 6 km SE of Wildwood. 28° 51' 55" N 82° 2' 20" W
Habitat Swampy margins and inundated areas.
Reproductive State
Collector M. T. Strong 3490
Collection Date 05 Aug 2005
Accession Number 242195
Image 242195.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Sumter Co. : Lake Okahumpka, areound the boat landing; just S of FL 44, ca. 6 km SE of Wildwood. 28° 51' 55" N 82° 2' 20" W
Habitat Swampy margins and inundated areas.
Reproductive State Fertile
Collector M. T. Strong 3490
Collection Date 05 Aug 2005
Accession Number 242156
Image 242156.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Sumter Co. : Along C-476B, 1.2 mi. S of C-476, ca. 4.5 mi. S of Wahoo. T21S, R21E, Sec. 27, SW¼ of SE¼. 28° 40' 60" N 82° 10' 60" W
Habitat Small creek.
Reproductive State Fertile
Collector B. F. Hansen 7096
with J. Hansen
Collection Date 19 Apr 1980
Accession Number 148721
Image 148721.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Duval Co. : Julington-Durbin Creek Preserve. Along the N shore of Durbin Creek, 4 mi. E of the St. Johns River. T4S, R27E, Sec. 27. 30° 4' 60" N 81° 27' 0" W
Habitat Bald cypress [Taxodium distichum]-Mixed hardwood swamp.
Reproductive State Fertile
Collector C. Slaughter 17352
with J. Taft, S. Seitz, J. Saunders, N. Muzon
Collection Date 28 Jul 2009
Accession Number 251607
Image 251607.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Georgia , Catoosa Co. : Edge of Blue Springs, 7.1 mi. W, 22 degrees S of Ringgold.
Habitat In water.
Reproductive State
Elevation 710 to ft
Collector W. H. Duncan 12690
Collection Date 21 Jun 1951
Accession Number 134489
Image 134489.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. South Carolina , Calhoun Co. : Lake Marion, Halfway Swamp Creek near the old earthen dam, 2 mi. S of Low Falls landing.
Description Growing in large clumps.
Habitat Within stand of Typha, associated with a large unidentified serpent.
Reproductive State
Collector C. A. Aulbach-Smith 3616
with R. Harvey.
Collection Date 24 Apr 1985
Accession Number 197548
Image 197548.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. South Carolina , Horry Co. : Golf club, Myrtle Beach.
Habitat Edge of artificial land.
Reproductive State
Collector C. A. Weatherby 16453
with L. Griscom.
Collection Date 19 Apr 1932
Accession Number 34436
Image 34436.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: H. L. Blomq.,
Locality USA. North Carolina , Stanly Co. : Long Creek, near Albemarle on NC 27.
Habitat River bottom.
Reproductive State
Collector H. E. Ahles 16246
with R. S. Leisner.
Collection Date 06 Jul 1956
Accession Number 15687
Image 15687.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Hillsborough Co. : Cypress Creek Nature Preserve, Lutz; S of County Line Road, W of I-275. 28° 9' 30" N 82° 24' 34" W
Habitat Mixed hardwood swamp.
Reproductive State Fertile
Collector S. Dickman
Collection Date 18 Apr 2009
Accession Number 294473
Image 294473.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Citrus Co. : Crystal River. 28° 53' 44" N 82° 34' 52" W
Habitat With Carex stipata, Osmunda regalis, and Sambucus canadensis [S. nigra subsp. canadensis].
Reproductive State Fertile
Collector L. W. Curtis
Collection Date 05 May 2017
Accession Number 296393
Image 296393.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Massachusetts , Norfolk Co. : Canton, Ponkapoag Bog; near golf course. 42° 11' 30" N 71° 7' 3" W
Description Common.
Habitat In open marshy area at W end of bog.
Reproductive State Fertile
Collector W. S. Judd
Collection Date 27 May 1976
Accession Number 152570
Image 152570.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Massachusetts , Norfolk Co. : Canton, Ponkapoag Bog; near golf course. 42° 11' 30" N 71° 7' 3" W
Description Common.
Habitat In an open marshy area at the extreme W end of bog.
Reproductive State Fertile
Collector W. S. Judd
Collection Date 13 Jul 1976
Accession Number 152559
Image 152559.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Virginia , Stafford Co. : Along Potomac River at Marlborough Route; Potomac Creek at the end of route 621.
Reproductive State Fertile
Collector T. Bradley
with B. Miller
Collection Date 20 Jul 1976
Accession Number 154102
Image 154102.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: D. Keil,
Locality USA. Illinois , Lake Co. : ON US 21, 1 mi. NW of junction with Old Rand Road, NW of Wauconda. 42° 15' 32" N 88° 8' 21" W
Habitat Marsh and woods.
Reproductive State Fertile
Collector D. J. Keil
Collection Date 29 Jun 1969
Accession Number 112023
Image 112023.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Pennsylvania , Lehigh Co. : Allentown; between railroad and race along Cedar Creek S of Walnut Street, and ca. 1-0.5 mi. SW BY W of Centre Square. 40° 36' 30" N 75° 29' 25" W
Habitat Very marshy lower or S end of open swale.
Reproductive State Fertile
Collector H. W. Pretz
Collection Date 16 Jun 1929
Accession Number 106038
Image 106038.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Pennsylvania , Crawford Co. : Woodcock Township; NE of the city of Meadville; 6.4 km (4 mi.) N of PA 86, then 5 km (3.1 mi.) E on highway 20070, then 0.2-0.4 km S; vicinity of "Corner Farm". 41° 38' 29" N 80° 9' 5" W
Habitat Typha-Carex marsh; in tussocks.
Reproductive State Fertile
Collector D. E. Boufford
with E.W. Wood
Collection Date 09 Jul 1979
Accession Number 163564
Image 163564.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Wisconsin , Dane Co. : Lake Kegonsa State Park, ca. 2.5 mi. N of Stoughton. T6N, R11E, Sec. 19. 42° 55' 1" N 89° 13' 4" W
Habitat Beach area.
Reproductive State Fertile
Collector B. F. Hansen
Collection Date 31 Jul 1986
Accession Number 205940
Image 205940.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: Reznicek, 2006
Locality USA. Illinois , Cass Co. : W of US 67, Illinois River floodplain, W side of excavated slough (Beardstown Marsh INAI site), Beardstown, Arenzville West 7.5 minute quadrangle Beardstown; at SW end of slough; coordinate datum: WGS84/NAD83. T18N, R12W, Sec. 21, NE¼, SE¼. 39° 59' 52" N 90° 26' 56" E
Description Robust multistemmed sedge ca. 0.5 m tall, spikes greenm immature, stems sharply triabgular.
Habitat Deep moist sand; mix of sand prairie and successional plants, both native and exotic, with Ulmus and Betula; most robust plants by drainage ditch in shade; low sand drainage area near artificial levee.
Reproductive State Fertile
Collector S. R. Hill
Collection Date 24 May 2006
Accession Number 284839
Image 284839.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Delaware , Sussex Co. : Reynolds Pond, E of Ellendale & N of Milton, DE 30, Issacs Road (Road 230) and Reynolds Pond Road (Road 231), Sowbridge Branch, E side of road. 38° 48' 51" N 72° 20' 40" W
Habitat Growing outlet of pond.
Reproductive State Fertile
Collector W. D. Longbottom
Collection Date 21 May 2011
Accession Number 266129
Image 266129.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: S.R. Hill & A.A. Reznicek, 2011
Locality USA. Illinois , McHenry Co. : E side of South Solon Road SSW of US 12, 4.9 km SSE of Richmond; coordinate datum: WGS84/NAD83; Richmond 7.5' quadrangle. T46N, R8E, Sec. 23, SW¼, NW¼. 42° 26' 17" N 88° 16' 31" E
Description Spikes firm, green, nodding; robust infrequent bunched sedge.
Habitat SE portion of marsh/fern, with Carex stricta, Carex vulpinoides, Carex suberecta, Aster puniceus, Scripus atrovirens.
Reproductive State Fertile
Elevation 770 to ft
Collector S. R. Hill
Collection Date 22 Jun 2011
Accession Number 267223
Image 267223.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Wisconsin , Dodge Co. : 8 yds. W of WI 28, 0.5 mi. N of intersection of WI 28 and Raasch Hill Road. T12N, R16E, Sec. 32.
Habitat Edge of open, marshy pool.
Reproductive State Fertile
Collector M. J. Huebschen
Collection Date 10 Jul 1993
Accession Number 231142
Image 231142.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Delaware , Sussex Co. : E of Ellendale along DE 30 at Reynolds Pond, growing on E side of road in Sowbridge Branch. 38° 48' 51" N 75° 20' 41" W
Reproductive State Fertile
Collector W. D. Longbottom
with R.D. Redden, J.D. Saffer
Collection Date 23 Jul 2006
Accession Number 277754
Image 277754.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Delaware , Sussex Co. : Town of Lewes, along Sweet Briar Road (Road 261) at Red Mill Pond & Martin Branch. 38° 44' 51" N 75° 13' 33" W
Habitat Growing along the edges of the pond.
Reproductive State Fertile
Collector W. D. Longbottom
Collection Date 23 Jul 2011
Accession Number 266178
Image 266178.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Delaware , Sussex Co. : Town of Milton, Diamond Pond at Sand Hill Road (Road 319). 38° 46' 8" N 75° 19' 4" W
Habitat Growing at the end of pond outlet.
Reproductive State Fertile
Collector W. D. Longbottom
Collection Date 24 Jun 2011
Accession Number 266185
Image 266185.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Pennsylvania , Lehigh Co. : Race along Cedar Creeks of Walnut Street, and ca. 1-0.5 mi. SW by W of Centre Square, Allentown. 40° 36' 30" N 75° 29' 25" W
Habitat Very marshy lower or S end of open swale between railroad.
Reproductive State Fertile
Collector H. W. Pretz
Collection Date 04 Aug 1929
Accession Number 106047
Image 106047.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Nebraska , Cherry Co. : 18 mi. S of Valentine, along US 83. 42° 52' 22" N 100° 33' 3" W
Habitat Marshy area.
Reproductive State Fertile
Collector L. E. Lindstrom
Collection Date 15 Jul 1966
Accession Number 90171
Image 90171.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Massachusetts , Suffolk Co. : Hyde Park.
Reproductive State Fertile
Collector A. W. Cheever
Collection Date 17 Jul 1904
Accession Number 68399
Image 68399.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. New York , Monroe Co. : Mendon. 42° 59' 52" N 77° 30' 16" W
Habitat Border pond.
Reproductive State Fertile
Collector W. A. Matthews
Collection Date 08 Jul 1917
Accession Number 32170
Image 32170.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Virginia , Princess Anne Co. : Oceana.
Habitat Gum swamp.
Reproductive State Fertile
Collector M. L. Fernald
with B. Long
Collection Date 29 Jul 1934
Accession Number 34437
Image 34437.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Maryland
Reproductive State Fertile
Collector P. Dowell
Collection Date 22 Jun 1902
Accession Number 34438
Image 34438.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. New Jersey , Sussex Co. : Andover. 40° 59' 9" N 74° 44' 32" W
Reproductive State
Collector P. Dowell
Collection Date 02 Jul 1907
Accession Number 34439
Image 34439.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Determination History
Carex pseudocyperus L.
Locality USA. Michigan , Gratiot Co. : Along the Pine River, Alma. 43° 22' 44" N 84° 39' 35" W
Habitat Swamps.
Reproductive State Fertile
Collector C. A. Davis
Collection Date 14 Jul 1993
Accession Number 34434
Image 34434.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: F. J. Herm., 1960
Locality USA. Michigan , Berrien Co. : Near Blue Creek, Beton Township; ca. 1 mi. W of Millburg. Sec. 14, E½. 42° 7' 0" N 86° 19' 60" W
Habitat Swamp ground.
Reproductive State Fertile
Collector E. G. Voss
Collection Date 11 Jun 1958
Accession Number 18694
Image 18694.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: C. vanHoek, 2018
Locality USA. Florida , Polk Co. : FL 33.
Reproductive State Fertile
Collector M. L. Gilbert
Collection Date 12 Apr 1956
Accession Number 300117
Image 300117.JPG
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott
Locality USA. Florida , Marion Co. : Rainbow Springs State Park. Kayak boat launch on Rainbow River. 59° 5' 21" N 82° 25' 34" W
Reproductive State Fertile
Collector L. W. Curtis
Collection Date 20 May 2020
Accession Number 301834
Image 301834.jpg
Plant Atlas Link Plant Atlas Citation

Carex comosa
Family Name Cyperaceae
Currently Accepted Name Carex comosa Boott - Determined By: R. R. Kowal, 19-Aug-1960
Locality USA. Florida , Marion Co. : Silver Springs.
Reproductive State Fertile
Collector A. E. Perkins
Collection Date 15 Apr 1936
Accession Number 304519
Image 304519.jpg
Plant Atlas Link Plant Atlas Citation