Cyperus squarrosus

ClassificationMonocots
FamilyCyperaceae
Family (Traditional)Cyperaceae
GenusCyperus
Species:Cyperus squarrosus L.
Common NameBearded Flatsedge
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: DRU; Natural Area Presence: GILES; Natural Area Presence: LC; Natural Area Presence: NRG; Duration: Annual; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Xeric; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: May; Reproductive Phenology: June; 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; Stamen Number: 1
C value 4
StatusNative; AGCP (OBL), EMP (FACW) (NWPL); TN[SNR] KY[S4?] (State Rank); G5 (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.

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  • 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 (5)

SynonymFull Citation
Cyperus aristatus Cyperus aristatus Rottb.
Cyperus aristatus var. inflexus Cyperus aristatus var. inflexus (Muhl.) Kük. in Engl.
Cyperus aristatus var. runyonii Cyperus aristatus var. runyonii O'Neill
Cyperus inflexus Cyperus inflexus Muhl.
Cyperus squarrosus var. runyonii Cyperus squarrosus var. runyonii (O'Neill) S.D. Jones & J. Wipff

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), Bath (KY), Boone (KY), Boyle (KY), Calloway (KY), Campbell (KY), Carlisle (KY), Clark (KY), Fayette (KY), Franklin (KY), Fulton (KY), Garrard (KY), Grayson (KY), Harrison (KY), Jefferson (KY), Jessamine (KY), Laurel (KY), Lewis (KY), Lyon (KY), McCracken (KY), Madison (KY), Marshall (KY), Mason (KY), Mercer (KY), Pendleton (KY), Pulaski (KY), Rowan (KY), Simpson (KY), Todd (KY), Trigg (KY), Trimble (KY), Warren (KY), Woodford (KY), Anderson (TN), Bedford (TN), Benton (TN), Carter (TN), Cheatham (TN), Claiborne (TN), Clay (TN), Coffee (TN), Davidson (TN), Decatur (TN), DeKalb (TN), Dyer (TN), Franklin (TN), Grainger (TN), Hamblen (TN), Hamilton (TN), Hardeman (TN), Hardin (TN), Hawkins (TN), Henderson (TN), Henry (TN), Houston (TN), Humphreys (TN), Jackson (TN), Jefferson (TN), Knox (TN), Marion (TN), Marshall (TN), Maury (TN), Montgomery (TN), Obion (TN), Perry (TN), Rutherford (TN), Smith (TN), Stewart (TN), Sumner (TN), Unicoi (TN), Union (TN), Washington (TN), Wayne (TN), Williamson (TN), Wilson (TN)

Herbaria represented by specimen data listed below: MDKY, MTSU, UOS, BOON, ETSU, BEREA, TENN, APSC, EKY, HTTU, KNK, UCHT, UTM

Range of years during which specimens were collected: 1973 - 2019

Accession No. (click for full details)
County
State
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
TENN-V-0038531 Anderson Tennessee
TENN
Cyperus aristatus
31234100068947 Ballard Kentucky 24 Aug 1973 Raymond Athey
2520
EKY
Cyperus aristatus
MDKY00003436 Ballard Kentucky
MDKY
Cyperus aristatus
TENN-V-0038867 Ballard Kentucky
TENN
Cyperus aristatus
TENN-V-0038848 Ballard Kentucky
TENN
Cyperus aristatus
31973000011451 Bath Kentucky 16 Oct 1999 Thieret, John
60790
KNK
Cyperus squarrosus
31973000011442 Bath Kentucky
KNK
Cyperus squarrosus
UCHT038778 Bedford Tennessee
UCHT
Cyperus squarrosus
UCHT038779 Bedford Tennessee
UCHT
Cyperus squarrosus
TENN-V-0038535 Benton Tennessee
TENN
Cyperus aristatus
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Plant Photos

Cyperus squarrosus - Tara Littlefield
Cyperus squarrosus - Tara Littlefield
Cyperus squarrosus - Tara Littlefield
Cyperus squarrosus - Tara Littlefield