Cyperus retrorsus

ClassificationMonocots
FamilyCyperaceae
Family (Traditional)Cyperaceae
GenusCyperus
Species:Cyperus retrorsus Chapman
Common NamePine Barren Flatsedge
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GRSM; Natural Area Presence: LGS; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Xeric; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Region of Origin: North America; 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; Stamen Number: 2; Stamen Number: 4
C value 4
StatusNative; AGCP (FACU), EMP (FAC) (NWPL); TN[SNR] KY[S1?] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

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

SynonymFull Citation
Cyperus plankii Cyperus plankii

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: Barren (KY), Harlan (KY), Jefferson (KY), Bradley (TN), Carter (TN), Fentress (TN), Greene (TN), Hardeman (TN), Hickman (TN), Marion (TN), Sevier (TN)

Herbaria represented by specimen data listed below: APSC, EKY, ETSU, HTTU, KNK, MDKY, TENN, UCHT

Range of years during which specimens were collected: 1978 - 1978

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
MDKY00003475 Harlan Kentucky
MDKY
Cyperus retrorsus
APSC0071280 Harlan Kentucky
APSC
Cyperus retrorsus
31973000011377 Bradley Tennessee
KNK
Cyperus retrorsus
HTTU007399 Tennessee
HTTU
Cyperus retrorsus
HTTU014421 Hickman Tennessee
HTTU
Cyperus retrorsus
TENN-V-0038486 Hardeman Tennessee
TENN
Cyperus retrorsus
APSC0065851 Jefferson Kentucky
APSC
Cyperus retrorsus
N/A Fentress Tennessee 14 Oct 1978 Henry R. DeSelm
248		 EKY
Cyperus retrorsus
ETSU002265 Greene Tennessee
ETSU
Cyperus retrorsus
TENN-V-0038488 Carter Tennessee
TENN
Cyperus retrorsus
31234100077229 Barren Kentucky Ed Hartowicz
 EKY
Cyperus retrorsus
UCHT003807 Marion Tennessee
UCHT
Cyperus retrorsus
TENN-V-0038487 Sevier Tennessee
TENN
Cyperus retrorsus
APSC0069439 Jefferson Kentucky
APSC
Cyperus retrorsus
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