Cyperus acuminatus

ClassificationMonocots
FamilyCyperaceae
Family (Traditional)Cyperaceae
GenusCyperus
Species:Cyperus acuminatus Torr. & Hook.
Common NameTapertip Flatsedge
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GILES; Duration: Annual; Duration: Perennial; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: graminoid; 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 (OBL) (NWPL); TN[SNR] KY[S5?] (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 cyrtolepis Cyperus cyrtolepis
Cyperus rufescens var. denticarinatus Cyperus rufescens var. denticarinatus

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: Campbell (KY), Fulton (KY), Hardin (KY), Harlan (KY), McCracken (KY), Magoffin (KY), Nelson (KY), Warren (KY), Dyer (TN), Hardin (TN), Humphreys (TN), Lake (TN), Loudon (TN), Marshall (TN), Montgomery (TN), Obion (TN), Roane (TN), Robertson (TN), Rutherford (TN), Shelby (TN), Stewart (TN), Wilson (TN)

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

Range of years during which specimens were collected: 1965 - 2016

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
31234100072691 Hardin Kentucky 28 Jul 1978 Ray Cranfill
1012		 EKY
Cyperus acuminatus
BEREA003955 Harlan Kentucky 06 Sep 1993 Randy L. Mears
186		 BEREA
Cyperus acuminatus
TENN-V-0037746 Shelby Tennessee
TENN
Cyperus acuminatus
TENN-V-0037745 Rutherford Tennessee
TENN
Cyperus acuminatus
TENN-V-0037744 Roane Tennessee
TENN
Cyperus acuminatus
TENN-V-0037742 Marshall Tennessee
TENN
Cyperus acuminatus
MEM000307 Obion Tennessee 22 Nov 1965 William R. Seals
s.n.		 MEM
Cyperus acuminatus
31234100072709 Harlan Kentucky 06 Sep 1993 Randy L. Mears
186		 EKY
Cyperus acuminatus
31234100072725 McCracken Kentucky Randy L. Mears
114		 EKY
Cyperus acuminatus
TENN-V-0037736 Dyer Tennessee
TENN
Cyperus acuminatus
BEREA003956 Magoffin Kentucky 11 Sep 1993 Randy L. Mears
205		 BEREA
Cyperus acuminatus
BEREA003957 McCracken Kentucky 24 Jul 1993 Randy L. Mears
114		 BEREA
Cyperus acuminatus
31973000011061 Campbell Kentucky
KNK
Cyperus acuminatus
TENN-V-0037737 Hardin Tennessee
TENN
Cyperus acuminatus
TENN-V-0037741 Marshall Tennessee
TENN
Cyperus acuminatus
TENN-V-0037740 Loudon Tennessee
TENN
Cyperus acuminatus
TENN-V-0037749 Wilson Tennessee
TENN
Cyperus acuminatus
APSC0036030 Stewart Tennessee 11 Aug 1990 James Joyner
 APSC
Cyperus acuminatus
APSC0068378 Robertson Tennessee 21 Aug 2016 Mason Brock
 APSC
Cyperus acuminatus
31973000011069 Shelby Tennessee
KNK
Cyperus acuminatus
TENN-V-0038944 Nelson Kentucky
TENN
Cyperus acuminatus
TENN-V-0037738 Humphreys Tennessee
TENN
Cyperus acuminatus
TENN-V-0037734 Obion Tennessee
TENN
Cyperus acuminatus
UCHT037723 Hardin Tennessee
UCHT
Cyperus acuminatus
UCHT038774 Wilson Tennessee
UCHT
Cyperus acuminatus
31234100072717 Magoffin Kentucky 11 Sep 1993 Randy L. Mears
205		 EKY
Cyperus acuminatus
TENN-V-0037739 Lake Tennessee
TENN
Cyperus acuminatus
TENN-V-0038946 Warren Kentucky
TENN
Cyperus acuminatus
31234100072683 Fulton Kentucky 05 Jun 1990 L. McKinney
4234		 EKY
Cyperus acuminatus
TENN-V-0037735 Montgomery Tennessee
TENN
Cyperus acuminatus
TENN-V-0037748 Loudon Tennessee
TENN
Cyperus acuminatus
TENN-V-0037747 Wilson Tennessee
TENN
Cyperus acuminatus
TENN-V-0038945 Fulton Kentucky
TENN
Cyperus acuminatus
TENN-V-0037743 Montgomery Tennessee
TENN
Cyperus acuminatus
APSC0072317 Warren Kentucky 19 Aug 1968 Harold Elmore
 APSC
Cyperus acuminatus
APSC0036031 Montgomery Tennessee 12 Aug 1981 Edward Chester
 APSC
Cyperus acuminatus
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