Cyperus iria

ClassificationMonocots
FamilyCyperaceae
Family (Traditional)Cyperaceae
GenusCyperus
Species:Cyperus iria L.
Common NameRicefield Flatsedge
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: LC; Duration: Annual; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Mesic; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: Africa; Region of Origin: Asia; Region of Origin: Europe; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Rank: 3-ranked; Leaf Type: grass-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: Brown (incl. Maroon); Base Flower Color: Green; Fruit Dehiscence: No; Fruit Type: Achene; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: N/A; Perianth Present: No; Placentation Type: Basal; Sporangium Arrangement: N/A
C value N/A
StatusNot Native; AGCP (FACW), EMP (FACW) (NWPL); TN[SNA] KY[SNA] (State Rank); GNR (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • State Boundaries
  • Counties
  • Counties - Species Present
Ecoregions
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim

Synonyms

No synonyms exist for this species.

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.

Counties included on distribution map: Ballard (KY), Boyle (KY), Calloway (KY), Campbell (KY), Carroll (KY), Fayette (KY), Floyd (KY), Fulton (KY), Gallatin (KY), Garrard (KY), Graves (KY), Hickman (KY), Jefferson (KY), Laurel (KY), Lawrence (KY), Lincoln (KY), Perry (KY), Pulaski (KY), Todd (KY), Trigg (KY), Warren (KY), Wayne (KY), Anderson (TN), Benton (TN), Bradley (TN), Carroll (TN), Davidson (TN), Decatur (TN), Fayette (TN), Franklin (TN), Hamilton (TN), Hardin (TN), Haywood (TN), Henderson (TN), Henry (TN), Knox (TN), Lake (TN), Lauderdale (TN), Lincoln (TN), Marion (TN), Monroe (TN), Montgomery (TN), Morgan (TN), Obion (TN), Perry (TN), Shelby (TN), Stewart (TN), Wayne (TN)

Herbaria represented by specimen data listed below: APSC, BEREA, BOON, EKY, KNK, MDKY, MEM, TENN, UCHT, UOS, VDB

Range of years during which specimens were collected: 1970 - 2017

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100076247 Graves Kentucky 01 Aug 1979 Raymond Athey
4407
EKY
Cyperus iria
31234100076270 Jefferson Kentucky 15 Sep 2005 Patricia D. Haragan
EKY
Cyperus iria
31234100076221 Floyd Kentucky 11 Sep 1993 Randy L. Mears
225
EKY
Cyperus iria
31234100076346 Wayne Kentucky 17 Sep 1995 Randy L. Mears
s.n.
EKY
Cyperus iria
BEREA004062 Ballard Kentucky 24 Jul 1993 Randy L. Mears
107
BEREA
Cyperus iria
BEREA004070 Pulaski Kentucky 24 Aug 2013 R.L. Thompson
13-433
BEREA
Cyperus iria
BEREA023510 Lincoln Kentucky 11 Oct 2015 Ralph L. Thompson
15-1181
BEREA
Cyperus iria
BEREA004072 Warren Kentucky 03 Aug 1994 Randy L. Mears
390
BEREA
Cyperus iria
BEREA023511 Carroll Kentucky 21 Oct 2017 Ralph L. Thompson
17-541
BEREA
Cyperus iria
31973000011247 Fulton Kentucky
KNK
Cyperus iria
MDKY00003460 Hickman Kentucky
MDKY
Cyperus iria
TENN-V-0038129 Obion Tennessee
TENN
Cyperus iria
TENN-V-0038130 Perry Tennessee
TENN
Cyperus iria
TENN-V-0038123 Lauderdale Tennessee
TENN
Cyperus iria
TENN-V-0038133 Stewart Tennessee
TENN
Cyperus iria
31234100076239 Fulton Kentucky 31 Jul 1994 Randy L. Mears
373
EKY
Cyperus iria
31234100076304 Lawrence Kentucky 02 Oct 1994 Randy L. Mears
455
EKY
Cyperus iria
BEREA004063 Ballard Kentucky 15 Sep 1993 Randy L. Mears
275
BEREA
Cyperus iria
BEREA004065 Floyd Kentucky 11 Sep 1993 Randy L. Mears
225
BEREA
Cyperus iria
BEREA004067 Laurel Kentucky 16 Aug 1993 Randy L. Mears
87
BEREA
Cyperus iria
31973000011246 Campbell Kentucky
KNK
Cyperus iria
TENN-V-0038135 Wayne Tennessee
TENN
Cyperus iria
TENN-V-0038104 Fayette Tennessee
TENN
Cyperus iria
TENN-V-0038128 Morgan Tennessee
TENN
Cyperus iria
TENN-V-0038116 Henry Tennessee
TENN
Cyperus iria
TENN-V-0038126 Marion Tennessee
TENN
Cyperus iria
TENN-V-0038100 Bradley Tennessee
TENN
Cyperus iria
TENN-V-0038108 Hardin Tennessee
TENN
Cyperus iria
TENN-V-0038101 Carroll Tennessee
TENN
Cyperus iria
APSC0041102 Hardin Tennessee 12 Aug 2011 David H. Webb
APSC
Cyperus iria
31234100076320 Todd Kentucky 30 Jul 1993 Randy L. Mears
86
EKY
Cyperus iria
31234100076288 Laurel Kentucky 16 Aug 1993 Rnadly L. Mears
87
EKY
Cyperus iria
BEREA004066 Fulton Kentucky 31 Jul 1994 Randy L. Mears
373
BEREA
Cyperus iria
TENN-V-0039503 Hickman Kentucky
TENN
Cyperus iria
TENN-V-0038114 Henderson Tennessee
TENN
Cyperus iria
TENN-V-0038098 Anderson Tennessee
TENN
Cyperus iria
TENN-V-0038097 Anderson Tennessee
TENN
Cyperus iria
TENN-V-0038113 Haywood Tennessee
TENN
Cyperus iria
TENN-V-0038118 Knox Tennessee
TENN
Cyperus iria
TENN-V-0038124 Lauderdale Tennessee
TENN
Cyperus iria
TENN-V-0242365 Trigg Kentucky
TENN
Cyperus iria
TENN-V-0038112 Haywood Tennessee
TENN
Cyperus iria
TENN-V-0038102 Davidson Tennessee
TENN
Cyperus iria
UCHT003753 Marion Tennessee
UCHT
Cyperus iria
APSC0039864 Trigg Kentucky
APSC
Cyperus iria
APSC0065842 Jefferson Kentucky
APSC
Cyperus iria
31234100076312 Perry Kentucky 15 Aug 1993 Randy L. Mears
137
EKY
Cyperus iria
31234100076213 Fayette Kentucky 21 Aug 1995 Randy L. Mears
s.n.
EKY
Cyperus iria
31234100076296 Lawrence Kentucky 02 Oct 1994 Randy L. Mears
455
EKY
Cyperus iria
31234100076338 Warren Kentucky 03 Aug 1994 Randy L. Mears
390
EKY
Cyperus iria
31973000011248 Fulton Kentucky
KNK
Cyperus iria
TENN-V-0038111 Haywood Tennessee
TENN
Cyperus iria
TENN-V-0038109 Hardin Tennessee
TENN
Cyperus iria
TENN-V-0243495 Marion Tennessee
TENN
Cyperus iria
TENN-V-0038121 Lake Tennessee
TENN
Cyperus iria
TENN-V-0039501 Ballard Kentucky
TENN
Cyperus iria
TENN-V-0038106 Hardin Tennessee
TENN
Cyperus iria
TENN-V-0038103 Decatur Tennessee
TENN
Cyperus iria
TENN-V-0039502 Graves Kentucky
TENN
Cyperus iria
APSC0039865 Trigg Kentucky
APSC
Cyperus iria
APSC0039873 Montgomery Tennessee
APSC
Cyperus iria
APSC0041542 Hardin Tennessee 26 Oct 2011 David H. Webb
APSC
Cyperus iria
31234100076262 Hickman Kentucky 27 Aug 1990 Landon E. McKinney
4517
EKY
Cyperus iria
31234100076205 Ballard Kentucky 24 Jul 1993 Randy L. Mears
107
EKY
Cyperus iria
BEREA022780 Garrard Kentucky
BEREA
Cyperus iria
BEREA004068 Lawrence Kentucky 02 Oct 1994 Randy L. Mears
455
BEREA
Cyperus iria
BEREA023512 Boyle Kentucky 22 Aug 2015 Ralph L. Thompson
15-956
BEREA
Cyperus iria
BEREA004069 Perry Kentucky 15 Aug 1993 Randy L. Mears
137
BEREA
Cyperus iria
BEREA004064 Fayette Kentucky 21 Aug 1995 Randy L. Mears
s.n.
BEREA
Cyperus iria
BEREA004071 Todd Kentucky 30 Jul 1993 Randy L. Mears
86
BEREA
Cyperus iria
TENN-V-0038134 Wayne Tennessee
TENN
Cyperus iria
TENN-V-0038110 Haywood Tennessee
TENN
Cyperus iria
APSC0039872 Montgomery Tennessee
APSC
Cyperus iria
APSC0039879 Shelby Tennessee
APSC
Cyperus iria
APSC0039868 Morgan Tennessee
APSC
Cyperus iria
APSC0072303 Hickman Kentucky
APSC
Cyperus iria
BRIT164072 Tennessee
VDB
Cyperus iria
31234100076197 Ballard Kentucky 15 Sep 1993 Randy L. Mears
275
EKY
Cyperus iria
N/A Ballard Kentucky 22 Sep 1970 Raymond Athey
1247
EKY
Cyperus iria
BEREA004075 Shelby Tennessee 01 Jul 1981 T. Heineke
2657
BEREA
Cyperus iria
TENN-V-0038119 Knox Tennessee
TENN
Cyperus iria
TENN-V-0038099 Benton Tennessee
TENN
Cyperus iria
TENN-V-0038096 Anderson Tennessee
TENN
Cyperus iria
TENN-V-0038117 Henry Tennessee
TENN
Cyperus iria
TENN-V-0038115 Henry Tennessee
TENN
Cyperus iria
APSC0039875 Henry Tennessee 11 Oct 1989 Edward Chester
APSC
Cyperus iria
APSC0039876 Lake Tennessee
APSC
Cyperus iria
UOS06940 Franklin Tennessee 16 Jul 1996 Landon E. McKinney
UOS
Cyperus iria
BRIT164071 Tennessee
VDB
Cyperus iria
BRIT164082 Tennessee
VDB
Cyperus iria
BRIT209866 Ballard Kentucky
VDB
Cyperus iria
BRIT209868 Calloway Kentucky
VDB
Cyperus iria
BRIT209871 Graves Kentucky
VDB
Cyperus iria
APSC0039862 Stewart Tennessee
APSC
Cyperus iria
APSC0065841 Hickman Kentucky
APSC
Cyperus iria
APSC0039867 Graves Kentucky
APSC
Cyperus iria
31234100076254 Hickman Kentucky 24 Jul 1976 Raymond Athey
3515
EKY
Cyperus iria
TENN-V-0038122 Lake Tennessee
TENN
Cyperus iria
TENN-V-0038107 Hardin Tennessee
TENN
Cyperus iria
TENN-V-0038127 Monroe Tennessee
TENN
Cyperus iria
006914 Carroll Tennessee
BOON
Cyperus iria
APSC0039866 Knox Tennessee
APSC
Cyperus iria
APSC0067521 Ballard Kentucky
APSC
Cyperus iria
BEREA004073 Wayne Kentucky 17 Sep 1995 Randy L. Mears
s.n.
BEREA
Cyperus iria
TENN-V-0038131 Shelby Tennessee
TENN
Cyperus iria
TENN-V-0038120 Lake Tennessee
TENN
Cyperus iria
TENN-V-0038132 Shelby Tennessee
TENN
Cyperus iria
TENN-V-0038105 Hamilton Tennessee
TENN
Cyperus iria
BRIT164068 Tennessee
VDB
Cyperus iria
BRIT164075 Tennessee
VDB
Cyperus iria
BRIT164080 Tennessee
VDB
Cyperus iria
BRIT164077 Tennessee
VDB
Cyperus iria
mem009918 Calloway Kentucky 18 Oct 1974 Raymond Athey
2985
MEM
Cyperus Iria
mem014831 Fulton Kentucky 11 Aug 1978 Raymond Athey
4191
MEM
Cyperus Iria
mem006816 Graves Kentucky 11 Sep 1973 Raymond Athey
2569
MEM
Cyperus Iria
BRIT164073 Tennessee
VDB
Cyperus iria
TENN-V-0038125 Lincoln Tennessee
TENN
Cyperus iria
APSC0039863 Stewart Tennessee
APSC
Cyperus iria
APSC0039870 Wayne Tennessee
APSC
Cyperus iria
BRIT164081 Tennessee
VDB
Cyperus iria
BRIT164070 Tennessee
VDB
Cyperus iria
BRIT164079 Tennessee
VDB
Cyperus iria
BRIT164076 Tennessee
VDB
Cyperus iria
mem007824 Shelby Tennessee 10 Jul 1971 John E. Thompson Jr.
314
MEM
Cyperus iria
BRIT209872 Hickman Kentucky
VDB
Cyperus iria
BRIT209870 Fulton Kentucky
VDB
Cyperus iria
BRIT209867 Ballard Kentucky
VDB
Cyperus iria
APSC0039871 Wayne Tennessee
APSC
Cyperus iria
APSC0039877 Stewart Tennessee
APSC
Cyperus iria
APSC0102744 Gallatin Kentucky
APSC
Cyperus iria
BRIT164083 Tennessee
VDB
Cyperus iria
BRIT164074 Tennessee
VDB
Cyperus iria
BRIT164069 Tennessee
VDB
Cyperus iria
BRIT164078 Tennessee
VDB
Cyperus iria
BRIT209869 Fulton Kentucky
VDB
Cyperus iria
BRIT209873 Hickman Kentucky
VDB
Cyperus iria
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Plant Photos

Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes
Cyperus iria - Dwayne Estes