Cyperaceae
Ricefield flatsedge
Cyperus iria
- Family
- Cyperaceae
- Genus
- Cyperus
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Common names
By language (11)
- arz
- سايبيروس ايريا
- Azerbaijani
- İriya topalağı
- Chinese
- 碎米莎草, 三楞草, 具芒碎米莎草, 野席草
- English
- Ricefield flatsedge, Iria flatsedge, Rice flat sedge
- Japanese
- コゴメガヤツリ
- Korean
- 참방동사니
- pam
- Trigu
- Punjabi
- ਛਤਰੀ ਵਾਲਾ ਡੀਲਾ
- Russian
- Сыть ирия
- Sinhala
- තුණැස්ස
- Thai
- หญ้ารังกาแก้ว
Synonyms
- Carex nangtciangensis Pamp.
- Chlorocyperus iria (L.) Rikli
- Cyperus chrysomelinus Link
- Cyperus diaphaniria Steud.
- Cyperus iria f. chrysomelinus (Link) Kük.
- Cyperus iria f. diaphaniria (Steud.) Miq.
- Cyperus iria f. flavescens (Benth.) Domin
- Cyperus iria f. multiflora Domin
- Cyperus iria var. flavescens Benth.
- Cyperus iria var. paniciformis (Franch. & Sav.) C.B.Clarke
- Cyperus iria var. santonici (Rottb.) Fernald & Griscom
- Cyperus iria var. typicus Domin
- Cyperus microlepis Baker
- Cyperus nangtciangensis Pamp.
- Cyperus paniciformis Franch. & Sav.
- Cyperus panicoides Lam.
- Cyperus resinosus Hochst.
- Cyperus resinosus Hochst. ex Steud.
- Cyperus santonici Rottb.
Flowers
- In flower
- April to November (from 57 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Annual
- In the US and Canada
- Lower 48 states: introduced, Pacific Basin: native, Puerto Rico: introduced
Photos
FlowerPhoto: Douglas Goldman, CC BY-SA 4.0, from iNaturalist 
FlowerPhoto: Celeste Ray, CC BY 4.0, from iNaturalist 
FlowerPhoto: chiuluan, CC BY 4.0, from iNaturalist 
FlowerPhoto: vrxz, CC BY-SA 4.0, from iNaturalist 
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons 
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons Photo: Titus Bandulo Phiri, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Greg Tasney, CC BY-SA 4.0, from iNaturalist Photo: Waseem Raja, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: 葉子, CC0, from iNaturalist 
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons Photo: blalshkh99, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Cyperus
- Papyrus sedgeCyperus papyrusCyperaceae
- NutgrassCyperus rotundusCyperaceae
- Yellow nutsedgeCyperus esculentusCyperaceae
- Cyperus alternifoliusCyperaceae
- Brown galingaleCyperus fuscusCyperaceae
- Tall flatsedgeCyperus eragrostisCyperaceae
- Variable flatsedgeCyperus difformisCyperaceae
- GalingaleCyperus longusCyperaceae
- Cyperus capitatusCyperaceae
- Jointed flatsedgeCyperus articulatusCyperaceae
- Pygmy sedgeCyperus michelianusCyperaceae
- Haspan flatsedgeCyperus haspanCyperaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.