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: Baldwin, Barbour, Blount, Bullock, Butler, Calhoun, Clarke, Coffee, Conecuh, Dale, Dallas, Elmore, Etowah, Geneva, Greene, Hale, Henry, Houston, Jefferson, Lamar, Lauderdale, Lee, Limestone, Macon, Marshall, Mobile, Monroe, Montgomery, Pike, Shelby, Talladega, Tuscaloosa, Winston

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UNA00054536 Blount 5 Oct 1998 Brian R. Keener
1702
UNA
Cyperus rotundus L.
JSU110569 Shelby 1 Sep 1996 D. D. Spaulding
9247
JSU
Cyperus rotundus Linnaeus
AUA000021157 Henry 2 NOV 1980 BEARD, BEN
095
AUA
CYPERUS ROTUNDUS L.
JSU110257 Calhoun 18 Jun 1992 D. D. Spaulding
2147
JSU
Cyperus rotundus Linnaeus
AUA000021169 Lee 4 MAY 1969 GRIFFIN, J. W.
147
AUA
CYPERUS ROTUNDUS L.
AUA000021172 Macon 2 AUG 1972 LUCKETT, LARRY
213
AUA
CYPERUS ROTUNDUS L.
AUA000021161 Lee 14 JUN 1963 ROGERS, KENNETH E.
-
AUA
CYPERUS ROTUNDUS L.
JSU110565 Limestone 27 Jun 1996 R. D. Whetstone
17916
JSU
Cyperus rotundus Linnaeus
AUA000021175 Montgomery 15 JUL 1967 THOMPSON, OLIVIA C.
83
AUA
CYPERUS ROTUNDUS L.
JSU110570 Shelby 10 Sep 1982 R. D. Whetstone
12258
JSU
Cyperus rotundus Linnaeus
AUA000021153 Conecuh 27 OCT 2005 DIAMOND, JR., ALVIN R.
16011
AUA
CYPERUS ROTUNDUS L.
UNA00062300 Dallas 28 Jun 2003 D. D. Spaulding
11931
UNA
Cyperus rotundus L.
TROY000025504 Coffee 23 Sep 2006 Jake Hendrix
113
TROY
Cyperus rotundus Linnaeus
AUA000021163 Lee 12 AUG 1948 BURKS
AUA
CYPERUS ROTUNDUS L.
TROY000025503 Conecuh 27 Oct 2005 Alvin R. Diamond
16011
TROY
Cyperus rotundus Linnaeus
AUA000021156 Geneva 25 JUL 1969 MOORE, HAROLD D.
432-69
AUA
CYPERUS ROTUNDUS L.
TROY000042560 Houston 30 Jul 2015 Alvin R. Diamond
26663
TROY
Cyperus rotundus Linnaeus
TROY000031984 Montgomery 13 Jun 2011 Alvin R. Diamond
22249
TROY
Cyperus rotundus Linnaeus
JSU110254 Calhoun 15 Jul 1982 R. D. Whetstone
11432
JSU
Cyperus rotundus Linnaeus
USAM000004645 Mobile 05 Sep 1975 Michel G. Lelong
8179
USAM
Cyperus rotundus Linnaeus
TROY000010313 Barbour 02 Aug 2007 Alvin R. Diamond
17841
TROY
Cyperus rotundus Linnaeus
UWAL0012577 Baldwin 24 Sep 2012 Dan Spaulding
13631
UWAL
Cyperus rotundus Linnaeus
UNA00065032 Conecuh 27 Oct 2005 Alvin R. Diamond
16011
UNA
Cyperus rotundus L.
UNA00002098 Mobile 30 Apr 1967 Rebecca Deramus
D1057
UNA
Cyperus rotundus L.
TROY000030416 Lauderdale 17 Oct 2009 Megan Young
6
TROY
Cyperus rotundus Linnaeus
AUA000021167 Lee 27 MAY 1970 EVANS, R. W.
141
AUA
CYPERUS ROTUNDUS L.
TROY000025506 Dale 14 May 1995 Clay Jernigan
4
TROY
Cyperus rotundus Linnaeus
AUA000021155 Elmore 5 AUG 1969 REBOIS, R. V.
145
AUA
CYPERUS ROTUNDUS L.
JSU110567 Marshall 21 Jul 1975 R. D. Whetstone
5198
JSU
Cyperus rotundus Linnaeus
AUA000021154 Dallas 28 JUN 2003 SPAULDING, DANIEL D.
11931
AUA
CYPERUS ROTUNDUS L.
TROY000025500 Dallas 28 Jun 2003 Daniel D. Spaulding
11931
TROY
Cyperus rotundus Linnaeus
AUA000021151 Conecuh 19 AUG 1995 DIAMOND, JR., ALVIN R.
9865
AUA
CYPERUS ROTUNDUS L.
UNA00058646 Lamar 28 Jul 2002 Brian R. Keener
2311
UNA
Cyperus rotundus L.
JSU110255 Calhoun 5 Oct 1986 C. L. Lawler
1334
JSU
Cyperus rotundus Linnaeus
UWAL0011125 Bullock 26 Apr 2012 Bailee Dykes
587
UWAL
Cyperus rotundus L.
UNA00002093 Hale 13 Jun 1966 Sherrie E. Maginness
309
UNA
Cyperus rotundus L.
AUA000021162 Lee 10 JUL 1948 HEINSELMAN
AUA
CYPERUS ROTUNDUS L.
AUA000021158 Henry 7 JUL 1977 GLICK, J. I.
104
AUA
CYPERUS ROTUNDUS L.
TROY000029321 Greene 26 Oct 2007 Daniel D. Spaulding
12783
TROY
Cyperus rotundus Linnaeus
AUA000021170 Lee 13 AUG 1954 ROBERTSON, J. H.
AUA
CYPERUS ROTUNDUS L.
JSU110563 Jefferson 23 Jul 1983 R. D. Whetstone
13478
JSU
Cyperus rotundus Linnaeus
AUA000021171 Lee 13 MAY 1936 THOMPSON, C. T.
AUA
CYPERUS ROTUNDUS L.
AUA000021173 Monroe 26 DEC 1986 DIAMOND, JR., ALVIN R.
2978
AUA
CYPERUS ROTUNDUS L.
TROY000025502 Pike 11 Oct 2002 April Vinson
2
TROY
Cyperus rotundus Linnaeus
UNA00002022 Mobile 11 Aug 1957 Kenneth F. Hancock
s.n.
UNA
Cyperus rotundus L.
TROY000025505 Coffee 20 Oct 2002 Joe Davis
7
TROY
Cyperus rotundus Linnaeus
AUA000021150 Baldwin 14 APR 1973 CANNON, ED
91
AUA
CYPERUS ROTUNDUS L.
AUA000021149 Baldwin 3 MAY 1969 MOORE, HAROLD D.
171-69
AUA
CYPERUS ROTUNDUS L.
AUA000021164 Lee 10 JUL 1948 SEARCY, V. S.
AUA
CYPERUS ROTUNDUS L.
JSU110259 Etowah 18 Oct 1975 R. D. Whetstone
6885
JSU
Cyperus rotundus Linnaeus
TROY000029655 Conecuh 15 Aug 2009 Alvin R. Diamond
20868
TROY
Cyperus rotundus Linnaeus
JSU110561 Jefferson 17 Oct 1975 R. D. Whetstone
7313
JSU
Cyperus rotundus Linnaeus
USAM000004646 Baldwin 30 Aug 1980 Michel G. Lelong
11362
USAM
Cyperus rotundus Linnaeus
TROY000010263 Butler 06 Jul 2007 Alvin R. Diamond
18036
TROY
Cyperus rotundus Linnaeus
TROY000035077 Bullock 26 Apr 2012 Bailee Dykes
587
TROY
Cyperus rotundus Linnaeus
UNA00002027 Tuscaloosa 25 Jul 1957 Kenneth F. Hancock
s.n.
UNA
Cyperus rotundus L.
TROY000025280 Calhoun 24 May 1982 R. David Whetstone
11211
TROY
Cyperus rotundus Linnaeus
AUA000021160 Lee 24 MAY 1964 CREEL, JOHN
-
AUA
CYPERUS ROTUNDUS L.
JSU110253 Blount 5 Oct 1998 Brian R. Keener
1702
JSU
Cyperus rotundus Linnaeus
AUA000021174 Montgomery 12 AUG 1969 OWENS, JAMES R.
144
AUA
CYPERUS ROTUNDUS L.
AUA000021168 Lee 16 MAY 1960 SHELDON, JOE
18.5
AUA
CYPERUS ROTUNDUS L.
JSU110260 Etowah 18 Oct 1975 R. D. Whetstone
6885
JSU
Cyperus rotundus Linnaeus
UWAL0003273 Conecuh 15 Aug 2009 A.R. Diamond
20868
UWAL
Cyperus rotundus L.
JSU110562 Jefferson 17 Oct 1975 R. D. Whetstone
7313
JSU
Cyperus rotundus Linnaeus
TROY000025281 Lamar 28 Jul 2002 Brian R. Keener
2311
TROY
Cyperus rotundus Linnaeus
UNA00002032 Mobile _ Jul _ Charles Mohr
s.n.
UNA
Cyperus rotundus L.
JSU110571 Talladega 12 Jun 1996 D. D. Spaulding
8969
JSU
Cyperus rotundus Linnaeus
AUA000021166 Lee 16 NOV 1972 BOWERS, JOHN R.
201
AUA
CYPERUS ROTUNDUS L.
JSU110564 Lee 2 May 1964 G. A. Bozarth
s.n.
JSU
Cyperus rotundus Linnaeus
AUA000021159 Lee 30 JUN 1969 MILLER, L. C.
078
AUA
CYPERUS ROTUNDUS L.
UWAL0032009 Houston 30 Jul 2015 Diamond, Alvin R.
26663
UWAL
Cyperus rotundus Linnaeus
JSU110256 Calhoun 25 Jul 1994 J. M. Ballard
4205
JSU
Cyperus rotundus Linnaeus
TROY000025501 Dale 17 Jul 2000 Tiffany Pennington
881
TROY
Cyperus rotundus Linnaeus
AUA000021152 Conecuh 10 AUG 1969 WEAVER, JIMMY
216
AUA
CYPERUS ROTUNDUS L.
JSU110258 Clarke 14 Sep 1997 R. D. Whetstone
18913
JSU
Cyperus rotundus Linnaeus
USAM000004647 Mobile 01 Oct 1968 Michel G. Lelong
4769
USAM
Cyperus rotundus Linnaeus
UWAL0003272 Butler 6 Jul 2007 A.R. Diamond
18036
UWAL
Cyperus rotundus L.
UNA00002017 Tuscaloosa 30 Jul 1957 Kenneth F. Hancock
s.n.
UNA
Cyperus rotundus L.
TROY000030922 Lee 15 Jun 1963 Ken Rogers
s.n.
TROY
Cyperus rotundus Linnaeus
UWAL0003274 Greene 26 Oct 2007 Daniel D. Spaulding
12783
UWAL
Cyperus rotundus L.
JSU110572 Winston 7 Jun 1975 R. D. Whetstone
4494
JSU
Cyperus rotundus Linnaeus
AUA000021165 Lee 17 AUG 1948 PARISH, LESTER O.
AUA
CYPERUS ROTUNDUS L.
JSU110566 Marshall 21 Jul 1975 R. D. Whetstone
5198
JSU
Cyperus rotundus Linnaeus
UWAL0010601 Montgomery 11 Nov 2011 Alvin R. Diamond
22697
UWAL
Cyperus rotundus Linnaeus
TROY000010314 Monroe 20 Sep 2007 Alvin R. Diamond
18235
TROY
Cyperus rotundus Linnaeus
AUA000021176 Pike 13 SEP 1994 DIAMOND, JR., ALVIN R.
9375
AUA
CYPERUS ROTUNDUS L.
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