Cyperus acuminatusTorr. & Hook.

tapertip flatsedge

WFO wfo-0000367440 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Cyperus acuminatus, photographed by Tyler Bishop
fig. a Tyler Bishop, CC BY 4.0 / 2020-06-17 / obs. 79412481
Cyperus acuminatus, photographed by Tyler Bishop
fig. b Tyler Bishop, CC BY 4.0 / obs. 79412511
Cyperus acuminatus, photographed by Tyler Bishop
fig. c Tyler Bishop, CC BY 4.0 / obs. 79412465
Cyperus acuminatus, photographed by Tyler Bishop
fig. d Tyler Bishop, CC BY 4.0 / obs. 79412443
Cyperus acuminatus, photographed by Evan Barker
fig. e Evan Barker, CC0 1.0 / obs. 5356878
Cyperus acuminatus, photographed by Eric Knight
fig. f Eric Knight, CC BY 4.0 / obs. 3803454
Cyperus acuminatus, photographed by Ryan Donnelly
fig. g Ryan Donnelly, CC BY 4.0 / obs. 86050818
Cyperus acuminatus, photographed by Ryan Donnelly
fig. h Ryan Donnelly, CC BY 4.0 / obs. 84215639

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 31 botanical countries

Regions where Cyperus acuminatus is native: Alabama, Arizona, Arkansas, California, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Mexico Northeast, Michigan, Minnesota, Missouri, Montana, Nebraska, New Mexico, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, Wyoming AlabamaArizonaArkansasCaliforniaColoradoIllinoisIndianaIowaKansasKentuckyLouisianaMarylandMexico NortheastMichiganMinnesotaMissouriMontanaNebraskaNew MexicoNorth CarolinaNorth DakotaOhioOklahomaOregonSouth DakotaTennesseeTexasUtahVirginiaWashingtonWyoming
Native distribution of Cyperus acuminatus, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Arizona ARI
Arkansas ARK
California CAL
Colorado COL
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Maryland MRY
Mexico Northeast MXE
Michigan MIC
Minnesota MIN
Missouri MSO
Montana MNT
Nebraska NEB
New Mexico NWM
North Carolina NCA
North Dakota NDA
Ohio OHI
Oklahoma OKL
Oregon ORE
South Dakota SDA
Tennessee TEN
Texas TEX
Utah UTA
Virginia VRG
Washington WAS
Wyoming WYO

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Cyperus acuminatus var. cyrtolepis (Torr. & Hook.) Kük.
  • Cyperus cyrtolepis Torr. & Hook.
  • Cyperus cyrtolepis var. caepitosus Boeckeler
  • Cyperus cyrtolepis var. denticarinatus (Britton) Britton
  • Cyperus cyrtolepis var. glaucescens Boeckeler
  • Cyperus rufescens var. denticarinatus Britton

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.