Cyperus rotundus

Family:CYPERACEAE
Species:Cyperus rotundus Linnaeus
Common Name:Purple Nutsedge; Cocograss; Nutgrass
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:**
Plant Notes:**
Taxonomic Notes:**
Status:Not Native, FAC- (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyCYPERACEAE - Sedge family
Genus Cyperus
Species Cyperus rotundus Linnaeus - Purple Nutsedge; Cocograss; Nutgrass

Citation

Citation CYPERUS ROTUNDUS Linnaeus, Sp. Pl. 45. 1753.
Basionym: **
Type: INDIA: Without data, Herb. Hermann 1: 3, no. 36 (lectotype: BM(2 shts)). Lectotypified by G. C. Tucker, Syst. Bot. Monogr. 43: 100. 1994.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Chlorocyperus rotundus Chlorocyperus rotundus (Linnaeus) Palla, Allg. Bot. Z. Syst. 6: 201. 1900.Cyperus rotundus Linnaeus 1753. 
Cyperus agrestis Cyperus agrestis Willdenow ex Link, Jahrb. Gewaechsk. 1(3): 86. 1820.  
Cyperus comosus Cyperus comosus Sibthorp & Smith, Fl. Graec. Prodr. 1: 30. 1806. GREECE
Cyperus curvatus Cyperus curvatus Llanos, Fragm. Pl. Filip. 15. 1851.  
Cyperus herbicavus Cyperus herbicavus Melliss, St. Helena 343. 1875.  
Cyperus hexastachyos Cyperus hexastachyos Rottbøll, Descr. Icon. Rar. Pl. 28. 1773, nom. illegit.Cyperus rotundus Linnaeus 1753. 
Cyperus hydra Cyperus hydra Michaux, Fl. Bor.-Amer. 1: 27. 1803. "Virginiae, Carolinae & Floridae",
Cyperus inconspicuus Cyperus inconspicuus Gennari, Linnaea 24: 200. 1851, non Liebmann 1850.  
Cyperus laevissimus Cyperus laevissimus Steudel, Syn. Pl. Glumac. 2: 32. 1854.  
Cyperus micreilema Cyperus micreilema Steudel, Syn. Pl. Glumac. 2: 32. 1854. SURINAM
Cyperus olivaris Cyperus olivaris O. Targioni Tozzetti, Mem. Mat. Fis. Soc. Ital. Sci. 13: 338. 1807.  
Cyperus patulus Cyperus patulus Marschall von Bieberstein, Fl. Taur.-Caucas. 3: 47. 1819, non Host 1805.  
Cyperus purpureovariegatus Cyperus purpureovariegatus Boeckeler, Beitr. Cyper. 2: 37. 1890. MARTINIQUE
Cyperus radicosus Cyperus radicosus Sibthorp & Smith, Fl. Graec. Prodr. 1: 30. 1806. GREECE
Cyperus rotundatus Cyperus rotundatus Koorders, Excurs.-Fl. Java 1: 190. 1911.  
Cyperus rotundus var. centiflorus Cyperus rotundus Linnaeus, var. centiflorus C. B. Clarke, J. Linn. Soc., Bot. 21: 171. 1884.  
Cyperus rotundus var. comosus Cyperus rotundus Linnaeus, var. comosus (Sibthorp & Smith) K. Richter, Pl. Eur. 1: 135. 1890.Cyperus comosus Sibthorp & Smith 1806. 
Cyperus rotundus var. elongatus Cyperus rotundus Linnaeus, var. elongatus Boeckeler, Linnaea 36: 285. 1870.  
Cyperus rotundus var. hydra Cyperus rotundus Linnaeus, var. hydra (Michaux) A. Gray, Manual, ed. 2. 493. 1856.Cyperus hydra Michaux 1803. 
Cyperus rotundus var. inconspicuus Cyperus rotundus Linnaeus, var. inconspicuus K. Richter, Pl. Eur. 1: 135. 1890.Cyperus inconspicuus Gennari 1851, non Liebmann 1850. 
Cyperus rotundus var. major Cyperus rotundus Linnaeus, var. major Parlatore, Fl. Ital. 2: 37. 1852.  
Cyperus rotundus var. mucrostachyus Cyperus rotundus Linnaeus, var. mucrostahyus Boissier, Fl. Orient. 5: 377. 1882.Cyperus tetrastachyus Desfontaines 1798. 
Cyperus rotundus var. quimoyensis Cyperus rotundus Linnaeus, var. quimoyensis L. Dai, Fl. Reip. Pop. Sin. 11: 315, 231. 1961.  
Cyperus rotundus var. salsolus Cyperus rotundus Linnaeus, var. salsolus C. B. Clarke, J. Linn. Soc., Bot. 21: 171. 1884.  
Cyperus rotundus var. subcapitatus Cyperus rotundus Linnaeus, var. subcapitatus (C. B. Clarke) Kükenthal, in Engler, Pflanzenr. 4(Heft 101): 113. 1935.Cyperus subcapitatus C. B. Clarke 1893. 
Cyperus rubicundus Cyperus rubicundus Willdenow ex Link, Jahrb. Gewaechsk. 1(3): 87. 1820.  
Cyperus stoloniferus var. pallidus Cyperus stoloniferus Retzius, var. pallidus Boeckeler, Linnaea 35: 490. 1868.  
Cyperus subcapitatus Cyperus subcapitatus C. B. Clarke, in Hooker f., Fl. Brit. India 6: 616. 1893. INDIA
Cyperus tetrastachyos Cyperus tetrastachyos Desfontaines, Fl. Atlant. 1: 45, t. 8. 1798.  

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Autauga, Baldwin, Barbour, Blount, Bullock, Butler, Calhoun, Clarke, Coffee, Conecuh, Covington, Dale, Dallas, Elmore, Etowah, Geneva, Greene, Hale, Henry, Houston, Jefferson, Lamar, Lauderdale, Lee, Limestone, Lowndes, Macon, Marshall, Mobile, Monroe, Montgomery, Morgan, Pike, Shelby, Talladega, Tuscaloosa, Winston

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AUA, JSU, TROY, UNA, USAM, UWAL

Range of years during which specimens were collected: 1949 - 2015

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
TROY000025505 Coffee 20 Oct 2002 Davis, Joe
7
TROY
Cyperus rotundus Linnaeus
UNA00002012 Tuscaloosa 6 Aug 1949 Carlin, May Gill
s.n.
UNA
Cyperus rotundus L.
AUA000021162 Lee 10 Jul 1948 Heinselman
AUA
Cyperus Rotundus L.
USAM000004645 Mobile 05 Sep 1975 LeLong, Michel G.
8179
USAM
Cyperus rotundus Linnaeus
UWAL0003274 Greene 26 Oct 2007 Spaulding, Daniel D.
12783
UWAL
Cyperus rotundus L.
AUA000021163 Lee 12 Aug 1948 Burks
AUA
Cyperus Rotundus L.
UNA00002027 Tuscaloosa 25 Jul 1957 Hancock, Kenneth F.
s.n.
UNA
Cyperus rotundus L.
TROY000035077 Bullock 26 Apr 2012 Dykes, Bailee
587
TROY
Cyperus rotundus Linnaeus
JSU110570 Shelby 10 Sep 1982 Whetstone, R. David
12258
JSU
Cyperus rotundus Linnaeus
UWAL0010601 Montgomery 11 Nov 2011 Diamond, Alvin R.
22697
UWAL
Cyperus rotundus Linnaeus
TROY000010314 Monroe 20 Sep 2007 Diamond, Alvin R.
18235
TROY
Cyperus rotundus Linnaeus
UNA00002012 Tuscaloosa 06 Aug 1949 Carlin, May Gill
s.n.
UNA
Cyperus rotundus L.
JSU110260 Etowah 18 Oct 1975 Whetstone, R. David
6885
JSU
Cyperus rotundus Linnaeus
AUA000021152 Conecuh 10 Aug 1969 Weaver, Jimmy
216
AUA
Cyperus Rotundus L.
JSU110258 Clarke 14 Sep 1997 Whetstone, R. David
18913
JSU
Cyperus rotundus Linnaeus
UNA00002093 Hale 13 Jun 1966 Maginness, Sherrie E.
309
UNA
Cyperus rotundus L.
AUA000021176 Pike 13 Sep 1994 Diamond, Alvin R.
9375
AUA
Cyperus Rotundus L.
AUA000021171 Lee 13 May 1936 Thompson, C.T.
AUA
Cyperus Rotundus L.
TROY000042560 Houston 30 Jul 2015 Diamond, Alvin R.
26663
TROY
Cyperus rotundus Linnaeus
AUA000021154 Dallas 28 Jun 2003 Spaulding, Daniel D.
11931
AUA
Cyperus Rotundus L.
JSU110255 Calhoun 5 Oct 1986 Lawler, Carol L.
1334
JSU
Cyperus rotundus Linnaeus
AUA000021167 Lee 27 May 1970 Evans, R.W.
141
AUA
Cyperus Rotundus L.
JSU110257 Calhoun 18 Jun 1992 Spaulding, Daniel D.
2147
JSU
Cyperus rotundus Linnaeus
AUA000021170 Lee 13 Aug 1954 Robertson, J.H.
AUA
Cyperus Rotundus L.
JSU110562 Jefferson 17 Oct 1975 Whetstone, R. David
7313
JSU
Cyperus rotundus Linnaeus
AUA000021172 Macon 2 Aug 1972 Luckett, Larry
213
AUA
Cyperus Rotundus L.
JSU110254 Calhoun 15 Jul 1982 Whetstone, R. David
11432
JSU
Cyperus rotundus Linnaeus
UNA00062300 Dallas 28 Jun 2003 Spaulding, Daniel D.
11931
UNA
Cyperus rotundus L.
AUA000038255 Morgan 10 Jun 2017 England, J. Kevin
8015
AUA
Cyperus Rotundus L.
AUA000021175 Montgomery 15 Jul 1967 Thompson, Olivia C.
83
AUA
Cyperus Rotundus L.
AUA000021166 Lee 16 Nov 1972 Bowers, John R.
201
AUA
Cyperus Rotundus L.
UNA00002022 Mobile 11 Aug 1957 Hancock, Kenneth F.
s.n.
UNA
Cyperus rotundus L.
TROY000010263 Butler 06 Jul 2007 Diamond, Alvin R.
18036
TROY
Cyperus rotundus Linnaeus
USAM000004646 Baldwin 30 Aug 1980 LeLong, Michel G.
11362
USAM
Cyperus rotundus Linnaeus
AUA000021164 Lee 10 Jul 1948 Searcy, V.S.
AUA
Cyperus Rotundus L.
JSU110565 Limestone 27 Jun 1996 Whetstone, R. David
17916
JSU
Cyperus rotundus Linnaeus
AUA000021161 Lee 14 Jun 1963 Rogers, Ken
AUA
Cyperus Rotundus L.
JSU110259 Etowah 18 Oct 1975 Whetstone, R. David
6885
JSU
Cyperus rotundus Linnaeus
AUA000021159 Lee 30 Jun 1969 Miller, L.C.
078
AUA
Cyperus Rotundus L.
TROY000029655 Conecuh 15 Aug 2009 Diamond, Alvin R.
20868
TROY
Cyperus rotundus Linnaeus
UWAL0003272 Butler 06 Jul 2007 Diamond, Alvin R.
18036
UWAL
Cyperus rotundus L.
TROY000047145 Mobile 05 Sep 1975 Lelong, Michel G.
8179
TROY
Cyperus rotundus Linnaeus
UWAL0046048 Autauga 05 Oct 2018 Parker, Matthew R.
1823
UWAL
Cyperus rotundus Linnaeus
JSU110566 Marshall 21 Jul 1975 Whetstone, R. David
5198
JSU
Cyperus rotundus Linnaeus
AUA000021150 Baldwin 14 Apr 1973 Cannon, Ed
91
AUA
Cyperus Rotundus L.
UNA00002017 Tuscaloosa 30 Jul 1957 Hancock, Kenneth F.
s.n.
UNA
Cyperus rotundus L.
TROY000030922 Lee 15 Jun 1963 Rogers, Kenneth E.
s.n.
TROY
Cyperus rotundus Linnaeus
TROY000025503 Conecuh 27 Oct 2005 Diamond, Alvin R.
16011
TROY
Cyperus rotundus Linnaeus
UWAL0003273 Conecuh 15 Aug 2009 Diamond, Alvin R.
20868
UWAL
Cyperus rotundus L.
TROY000025281 Lamar 28 Jul 2002 Keener, Brian R.
2311
TROY
Cyperus rotundus Linnaeus
UNA00002083 Tuscaloosa 2 May 1963 Howell, Wm. Mike
s.n.
UNA
Cyperus rotundus L.
TROY000031984 Montgomery 13 Jun 2011 Diamond, Alvin R.
22249
TROY
Cyperus rotundus Linnaeus
UWAL0011125 Bullock 26 Apr 2012 Dykes, Bailee
587
UWAL
Cyperus rotundus L.
AUA000021173 Monroe 26 Dec 1986 Diamond, Alvin R.
2978
AUA
Cyperus Rotundus L.
USAM000004647 Mobile 01 Oct 1968 LeLong, Michel G.
4769
USAM
Cyperus rotundus Linnaeus
UWAL0012577 Baldwin 24 Sep 2012 Spaulding, Daniel D.
13631
UWAL
Cyperus rotundus Linnaeus
TROY000048760 Autauga 28 Jun 2017 Parker, Matthew R.
962
TROY
Cyperus rotundus Linnaeus
UNA00002098 Mobile 30 Apr 1967 Deramus, Rebecca
D1057
UNA
Cyperus rotundus L.
JSU110567 Marshall 21 Jul 1975 Whetstone, R. David
5198
JSU
Cyperus rotundus Linnaeus
AUA000021160 Lee 24 May 1964 Creel, John
AUA
Cyperus Rotundus L.
UNA00002032 Mobile _ Jul _ Mohr, Charles
s.n.
UNA
Cyperus rotundus L.
AUA000021157 Henry 2 Nov 1980 Beard, Ben
095
AUA
Cyperus Rotundus L.
TROY000025506 Dale 14 May 1995 Jernigan, Clay
4
TROY
Cyperus rotundus Linnaeus
UWAL0034993 Morgan 10 Jun 2017 England, J. Kevin
8015
UWAL
Cyperus rotundus Linnaeus
TROY000025502 Pike 11 Oct 2002 Vinson, April
2
TROY
Cyperus rotundus Linnaeus
ALNHS00003495 Houston 28 May 2015 Barger, T. Wayne
DTP-198
ALNHS
Cyperus rotundus L.
TROY000025504 Coffee 23 Sep 2006 Hendrix, Jake
113
TROY
Cyperus rotundus Linnaeus
AUA000021153 Conecuh 27 Oct 2005 Diamond, Alvin R.
16011
AUA
Cyperus Rotundus L.
JSU110568 Monroe 12 Sep 1997 Whetstone, R. David
18446
JSU
Cyperus rotundus Linnaeus
UWAL0032009 Houston 30 Jul 2015 Diamond, Alvin R.
26663
UWAL
Cyperus rotundus Linnaeus
AUA000021156 Geneva 25 Jul 1969 Moore, Harold D.
432-69
AUA
Cyperus Rotundus L.
JSU110563 Jefferson 23 Jul 1983 Whetstone, R. David
13478
JSU
Cyperus rotundus Linnaeus
AUA000021158 Henry 7 Jul 1977 Glick, J.I.
104
AUA
Cyperus Rotundus L.
AUA000041244 Covington 21 Nov 2013 Hansen, Curtis J.
5863
AUA
Cyperus Rotundus L.
TROY000048274 Autauga 05 Oct 2018 Parker, Matthew R.
1823
TROY
Cyperus rotundus Linnaeus
UWAL0038201 Mobile 05 Sep 1975 LeLong, Michel G.
8179
UWAL
Cyperus rotundus Linnaeus
TROY000025280 Calhoun 24 May 1982 Whetstone, R. David
11211
TROY
Cyperus rotundus Linnaeus
JSU110253 Blount 5 Oct 1998 Keener, Brian R.
1702
JSU
Cyperus rotundus Linnaeus
TROY000029321 Greene 26 Oct 2007 Spaulding, Daniel D.
12783
TROY
Cyperus rotundus Linnaeus
UNA00065032 Conecuh 27 Oct 2005 Diamond, Alvin R.
16011
UNA
Cyperus rotundus L.
TROY000049062 Autauga 24 Jul 2019 Diamond, Alvin R.
29026
TROY
Cyperus rotundus Linnaeus
UWAL0037879 Mobile 18 Aug 1967 LeLong, Michel G.
3574
UWAL
Cyperus rotundus L.
AUA000043834 Lee 20 Sep 2018 Taylor, Chris T.
CSP-637
AUA
Cyperus Rotundus L.
TROY000025501 Dale 17 Jul 2000 Pennington, Tiffany
881
TROY
Cyperus rotundus Linnaeus
AUA000021168 Lee 16 May 1960 Sheldon, Joe
18.5
AUA
Cyperus Rotundus L.
JSU110564 Lee 2 May 1964 Bozarth, Gene A.
s.n.
JSU
Cyperus rotundus Linnaeus
UNA00058646 Lamar 28 Jul 2002 Keener, Brian R.
2311
UNA
Cyperus rotundus L.
TROY000010313 Barbour 02 Aug 2007 Diamond, Alvin R.
17841
TROY
Cyperus rotundus Linnaeus
UNA00054536 Blount 05 Oct 1998 Keener, Brian R.
1702
UNA
Cyperus rotundus L.
JSU110571 Talladega 12 Jun 1996 Spaulding, Daniel D.
8969
JSU
Cyperus rotundus Linnaeus
AUA000021155 Elmore 5 Aug 1969 Rebois, R.V.
145
AUA
Cyperus Rotundus L.
JSU110561 Jefferson 17 Oct 1975 Whetstone, R. David
7313
JSU
Cyperus rotundus Linnaeus
AUA000021151 Conecuh 19 Aug 1995 Diamond, Alvin R.
9865
AUA
Cyperus Rotundus L.
UWAL0046447 Autauga 28 Jun 2017 Parker, Matthew R.
962
UWAL
Cyperus rotundus Linnaeus
JSU110572 Winston 7 Jun 1975 Whetstone, R. David
4494
JSU
Cyperus rotundus Linnaeus
UWAL0042980 Baldwin 26 Sep 2001 Larsen, Harry S.
910
UWAL
Cyperus rotundus L.
AUA000021149 Baldwin 3 May 1969 Moore, Harold D.
171-69
AUA
Cyperus Rotundus L.
TROY000051639 Lowndes 03 Oct 2020 Diamond, Alvin R.
29486
TROY
Cyperus rotundus Linnaeus
AUA000021169 Lee 4 May 1969 Griffin, J.W.
147
AUA
Cyperus Rotundus L.
AUA000021174 Montgomery 12 Aug 1969 Owens, James R.
144
AUA
Cyperus Rotundus L.
TROY000030416 Lauderdale 17 Oct 2009 Young, Megan
6
TROY
Cyperus rotundus Linnaeus
UNA00002083 Tuscaloosa 02 May 1963 Howell, Wm. Mike
s.n.
UNA
Cyperus rotundus L.
JSU110256 Calhoun 25 Jul 1994 Ballard, J. Mark
4205
JSU
Cyperus rotundus Linnaeus
AUA000021165 Lee 17 Aug 1948 Parish, Lester O.
AUA
Cyperus Rotundus L.
JSU110569 Shelby 1 Sep 1996 Spaulding, Daniel D.
9247
JSU
Cyperus rotundus Linnaeus
TROY000025500 Dallas 28 Jun 2003 Spaulding, Daniel D.
11931
TROY
Cyperus rotundus Linnaeus
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